Starting a Mazda RX-8 with a flooded engine

October 12, 2010 · Posted in Transport 

Mazda RX-8

Mazda RX-8

A few weeks ago, I made the mistake of moving my RX-8 a short distance and didn’t allow the engine to warm up before switching it off. It’s well-known that this can lead to a flooded engine and this time was no different. :-( I knew it was a mistake, but I was in a hurry!

I’ve only had this happen once before and, as then, I couldn’t get the engine restarted using the manufacturer’s technique of fully depressing the throttle (should cut the fuel), cranking the engine for 10 seconds (should clear the flood) and then cranking as normal. Having tried this a couple of times, I soon ran the battery flat and so had to recharge it overnight.

Next day, I tried the tips from this excellent blog post. It describes how to unplug the air pump and remove the fuel pump fuse to assist with starting. I tried this but again failed, mainly due to lack of charge in the battery even though it was fully recharged. The same technique was used by the RAC chap who got me going the first time this happened – it took him about 20 minutes and of course he had access to a much better power source on his van.

Now out of options, I called the AA. The chap they sent out took a rather different approach which I’ll attempt to describe here in case anyone would like to try it:

RX-8 fuel pump cover under seat

RX-8 fuel pump cover under seat

1. Remove the nearside rear seat base cover. The lower seat cushion simply pulls up (see comment 57 from KenF below).

RX-8 fuel pump cover without screws

RX-8 fuel pump cover without screws

2. This reveals an access panel which is held in place by 4 sheet metal screws. Remove these screws and the panel.

Underneath RX-8 fuel pump cover

Underneath RX-8 fuel pump cover

3. There is a single electrical connector (black plug with 3 cables connected to it) on the pump assembly that provides power to the fuel pump and readings from the left-side tank level sensor. Take a moment to learn how to disconnect and reconnect this connector.

4. If possible, connect an additional power source to the battery (another battery or another car via jump leads).

5. Position yourself in the driver’s seat with your left hand stretched behind you (assuming you have a right-hand drive vehicle) ready to connect/disconnect the fuel pump. Keep it in the disconnected position.

6. Apply around 1/3 throttle on the accelerator pedal. Use your right hand to turn the ignition key.

7. The engine will turn but not start. After around 10 seconds, connect the fuel pump for a few seconds then disconnect.

8. You may need to repeat this a few times. Don’t crank for more than about 30 seconds at a time though to save your starter motor!

9. After a few tries, hopefully you’ll hear the engine getting close to starting. The point of connecting and disconnecting is that you are trying to clear the engine and then reconnect at just the right time to get the fuel pumping again (see Andy’s comment, 8 below).

The AA chap said that using this technique he can usually get RX-8s restarted in around half the time it takes using the fuse removal, etc. Apparently he learnt this from a chance conversation with an engineer from Mazda. I suspect it’s the sort of thing you need to try a few times to get it right, but it certainly seems to offer more control over the process as you can access and change all inputs at the same time (fuel pump, throttle and ignition).

Let me know if you try it. As always though, it’s at your own risk – I don’t want any repair bills for a knackered fuel pump or catalytic converter :-)

If you leave a comment below, it would be great if you could add which country you are in, there are quite a few here already!


203 Responses to “Starting a Mazda RX-8 with a flooded engine”

  1. Al on October 22nd, 2010 22:44

    Thanks a million for sharing that. Like you I’d been in a hurry, moved the car and switched off the engine. The annoying thing was that the first time it happened (a couple of years ago) the AA man came round and fiddled around in the back of the car but I couldn’t remember what he’d done. I’d tried all the fuse cutting, cranking, throttling etc. but no joy. As soon as I saw your article it all came back to me. I followed your instructions (definitely needed the jump leads) and it started at the second attempt. Brilliant. Looks like the AA must have passed the tip around! Cheers.

  2. admin on October 22nd, 2010 23:03

    Thanks for that Al, glad it helped you get up and running again!

  3. Tommy on November 13th, 2010 01:57

    Bro, THANK YOU SO DAMN MUCH!!!!!! This trick saved me a 500 dollar bill from my local mazda dealership! Cheers!

  4. Karl on January 7th, 2011 10:46

    Cheers mate, I’m having massive problems with my 2004 RX8 flooding over winter – Didn’t drive it for a month, then when I came to start it the battery was knackered.

    Now been through loads of things on starting with the simple foot to the floor, progressing to removing the plugs, removing the fuel pump fuse, cranking like crazy… allsorts!

    This is the next thing I’m going to try – though I’m just worried I’ll re-flood it again by reconnecting the fuel pump.

  5. admin on January 7th, 2011 11:08

    Hi Karl. Should be OK if you’re careful when reconnecting the pump. The beauty of this method is that if you sense it’s not going well, you can instantly disconnect it.

  6. Karl on January 7th, 2011 16:55

    Just got it started – I didn’t have to use this method in the end, but I reckon it would have been a LOT quicker – it’s taken me 3 days of de-flooding, re-flooding, tears, tantrums, and hope, but it finally sprung to life.

    Here’s the video I hastily made when it sprung to life:

  7. admin on January 7th, 2011 17:31

    Great, well done for getting it going again! I like the video, that’s just how mine was too – loads of blue/grey exhaust :-)

  8. andy on January 28th, 2011 14:46

    just followed this guide and BINGO! the trick is to turn with it disconnected until you get a splutter (i think it was 2-3 tries) then leave it connected and turn as normal. thanks to the OP.

  9. spinage on January 28th, 2011 14:47

    Thanks for the further tips Andy – glad it worked well for you!

  10. ElatedinOklahoma on February 7th, 2011 12:50

    Thank you very much. I couldn’t be happier right now. This was my second flood and this one was a whole hell of alot harder than the first. But with your tip I got her started up. Ok back to dancing for joy.

  11. spinage on February 7th, 2011 13:05

    Glad this post has helped out a couple of fellow rotary drivers over in the USA so far. It’s great hear all the feedback so please do comment and let me know if you’re UK or non-UK too.

  12. JohnE on February 25th, 2011 18:08

    Many thanks. Used your method and needed about 6-10 bursts of 10 seconds without fuel before engine caught. Really weird to have it run for 2-3 secs with no fuel. Had to have 2 or 3 complete cycles doing this before got engine started with fuel on – need to keep starter cranking until revs get above about 1500.

    I think it works the same as taking out the fuse – just quicker once you’ve got access to the pump. The electrical connector has a top-hinged flap facing the door which interlocks with the body – it takes quite a bit of force to depress this and get the connector off.

    Did anybody mention the smell – it’s terrible!

  13. spinage on February 25th, 2011 19:09

    Thanks for the extra details John! Yes I remember the smell now you mention it :-)

  14. Paul Hodson on April 18th, 2011 08:28

    For the second time in five years this happened to our RX8, however the fix was different than above.

    Couldn’t get it to start – no way, nada. Whirred but wouldn’t fire. Couldn’t hear the petrol pump prime and every crank I could hear the smell of money leaving our account at the thought of repair costs.

    The car sits nose up on our drive which is slightly on an incline. So, the petrol gauge reading 1/4 full I added, from a petrol can, more petrol. Still whirring but no starting.

    Next came the blue fuse method – nada. In the same fuse box within the engine bay and in the same area as the blue fuse, you’ll find the diagram for the breakers. One of them, a 20, is set aside for the pump. I took that out, clean the contacts with my shirt and replaced. Result? Car started, no smoke just purred like normal.

    In reality this was likely a lack of fuel and the meter being fooled given the incline of our drive. Cranking before all this sounded very much like a flooding issue but wasn’t.

  15. spinage on April 18th, 2011 09:46

    Thanks Paul, another situation to look out for.

  16. james Cushing on May 11th, 2011 21:39

    Tried this method but still no joy. disconneted the fuel pump and it start edbut would’nt keep going. should i be reconnecting the fuel pump at this stage and trying to restart?

  17. spinage on May 31st, 2011 22:10

    James, sounds like you need to reconnect when you get it going.

  18. Mark on June 12th, 2011 00:18

    My dad flooded my 04 rx8 while i was on holidays, ill give this method a go tomorrow when the jet lag wears off :) thnx

  19. Boney garay on June 29th, 2011 10:48

    well man thanx for the tip it realty worked ty!!

  20. tony smith on July 6th, 2011 04:29

    I have nothing but the highest praise for this technique! I flooded my RX, tried throttle to the floor, nothing, pulled the fuel pump fuse, nothing, took the plugs out, cleaned and dried, span the engine over with them out, replaced them, nothing. Finally, disconnected fuel pump as above, span it over a few times, reconnected pump, started first time! Superb! Holding the throttle at about 1/3 open seems to be the trick when going for the restart.

  21. spinage on July 6th, 2011 07:57

    Thanks Tony, great to hear that feedback from you. I notice you’re from New Zealand, great country and I remember rotary engines are popular there.

  22. Elvin on August 15th, 2011 15:16

    Tanks man ur technic saved me lots of money

  23. John on August 19th, 2011 06:32


    Before trying this method I tried both the method outlined in the owners manual and pulling the fuel pump fuse. Didn’t get anywhere with either method. I had the car hooked up to a battery charger with a 275amp engine start mode so battery power wasn’t the problem. just couldn’t get it to fire up.

    Removing the rear seat took a lot more effort that I expected. I was afraid i was going to break something. Once I did get the seat out it took me about an hour to get the car started. However, I let it sit for 5-10 minutes between attempts.

    The guys at the local dealership told me that if I am going to shut off the car before it has warmed up that I need to rev it up and turn it off with the engine turning 6K+ RPMs.


  24. spinage on August 19th, 2011 07:47

    Great to hear from you John, and thanks for the extra information.

  25. michael newman on September 12th, 2011 16:20

    Thank you thank you! it works!!!

  26. GazP on October 7th, 2011 14:04

    My car flooded yesterday. Pulled out of an up hill junction, engine bogged down when cold. FLOODED – WON’T START. Towed back to house.
    Will try this method when I get home & let you know.

    Cheers GP

  27. psychedshell on October 15th, 2011 20:40

    Thanks so much for all this info. I have a 2004 RX* beauty. She has flooded 3 times since I have owned her (4/2009 @ 55,000 miles) and has had the coils and plugs replaced by dealer twice. I also had $800 worth of some new replacement valve in Jan 2011. She has 116,000 miles on her now and I am once again finding her not starting. She sat for about a week without being driven. I tried to jump her started at first thinking it was the battery from sitting. No luck. I then tried the de-flood technique involving disconnecting the air pump, and fuel pump fuse, cranking 4s, idle 2 sec-a full minute cycle followed by the same again. Then fuse back in and hope for a start. After 3 failed attempts and a weakened battery, I replaced the battery and still no luck this morning. I have know went out to yank up my backseat to find fuel pump and when I get someone to come hook up some jumper cables for battery power, I am hoping your technique works like a charm. I love my car, but the unreliability is hard on the wallet and my stress levels. Wish me luck please!!

  28. spinage on October 16th, 2011 08:22

    Hi pyschedshell, thanks for your comment. Good luck, and let us know how you get on!

  29. Mark on October 30th, 2011 14:04

    I have just tried this way of starting a severely flooded rx8,and it worked,everything else I tried did not work and I also fitted a new set of plugs at £120 for 4,luckily the car is not mine but a friends

  30. spinage on October 30th, 2011 15:01

    Hi Mark, thanks for the comment. Glad you could get your friend up and running again.

  31. malc on November 14th, 2011 11:15

    Thanks for this, helped me get over my PANIC of a non starter after moving it from the drive to a parking bay after I had cleaned it. 20 seconds of driving, and a day of PAIN. The procedure worked without issue, but I think the starter smoked for a little while and I think there is a noise coming from the exhaust, which maybe the cat? Also, I see people have invested in these NGK Laser Irdidium plugs, is it worth the mega money? Found them for ab out £80 + vat

  32. spinage on November 14th, 2011 12:02

    Great to hear that, Malc. Interesting tip about the plugs.

  33. Joe P on November 17th, 2011 20:15

    My 2005 RX8 has been sitting for 2 weeks now due to flooding. I tried the accelerator to the floor method in the user manual, didn’t work. Tried the method from the Mazda Technical Service Bulletin of removing plugs, air pump regulator connector, fuel pump fuse and disconnected the fuel pump connector, I cranked it for couple days, left it sitting to dry out for nearly 3 days cranking it occasionally and that didn’t work either. I’ve tried the washer fluid into the service ports trick, that didn’t work at all. The plugs were an hour old when I flooded the car and I get spark to the plugs when I checked them after the flooding. I have no idea how to get my 8 started and I’m way past the point of shelling out cash to the worthless evil Mazda dealership. Guess I’ll give this a try tonight, put the charger on the battery when I get home and I’m gonna crank the piss out of her till she starts or blows the frick up. I’m over it lol

  34. spinage on November 17th, 2011 21:51

    Good luck, Joe!

  35. Mongolia on November 20th, 2011 08:39

    I leave my car last night -20degree outside morning dont start what should i do is this help me soling my prob.

  36. spinage on November 21st, 2011 22:44

    Hi, great to hear from you over there in Mongolia! -20 is pretty cold, perhaps you could use an engine warmer and check the battery before using this technique.

  37. Matt K on December 7th, 2011 21:12

    Worked like a charm! I dried cranked it with the fuel pump off for about 6 to 10 times 10 secs each. Lots of exhaust smoke. Once it cleared and I thought I burnt out everything in the engine, I cranked it dry for 3 secs and then hooked up the fuel pump until the engine caught. Took a couple tries but it spun up, thanks!

  38. spinage on December 7th, 2011 21:48

    Great, glad to hear that Matt!

  39. Mark on December 20th, 2011 13:14

    Cheers, been pulling my hair out trying to start my RX8 for days. Fuel pump fuse in and then out, jump starting, booster packs. Nightmare.
    Then came arcoss this blog and hey presto, running again within minutes. Just as compression starts back on with the plug and wuh hey shes running.
    Love you man !

  40. spinage on December 20th, 2011 13:24

    Thanks Mark, that’s great to hear.

  41. MacLeod on December 21st, 2011 17:27

    Sitting in my rx-8 now in the outer Hebrides Scotland. Not a Mazda garage on the islands, I’m flooded after my battery went flat, blowing a gale and pitch black just now. So will try this tomorrow. I have taken the fuse out but no compression yet….

    Great page Spinage!! :-)

  42. spinage on December 22nd, 2011 07:03

    I’ll keep my fingers crossed for you! Let us know how it goes.

  43. Stuart on December 28th, 2011 13:19

    Used this method when my sons RX8 which he had moved off the driveway then turned off, failed to start a few hours later. Tried the Mazda recommended system with the accelerator pedal settings but probably this method may need some considerable time like the above system we eventually used. It worked and after a good half hour of trying we eventually got the engine started and running normally. Whether the persistence with the accelerator settings would also work will only be decided if someone tries. However, it is essential to have another vehicle with jump leads because it is doubtful the RX8 will have enough battery life for the amount of time required. Did find the Traction control system was flashing after all this and would not reset, but no doubt that will be a small problem to resolve later.

  44. Stuart on January 1st, 2012 13:01

    Further to my previous post #43. Traction control appears to have reset itself without any further involvement. Also, car now appears to be running slightly better than it was before. Almost like a decoke has cleared the system. Strange but not complaining.

  45. Hayley on January 6th, 2012 17:13

    Worked like a treat, although after re connecting the fuel pump, i reverted back to the owners manual advice of fully depressing the gas pedal to start up to stop from re flooding.

    Instructions are fab even me, a girl, can do this….

    Thanks Spinage.

    Hayley (UK)

  46. spinage on January 6th, 2012 18:38

    Thanks Hayley! :-)

  47. rich on February 7th, 2012 17:00

    Perfect, Thanks for this!

  48. Fabian on February 23rd, 2012 18:30

    do you crank the engine when you connect or do you connect the fuel pump and dont turn the engine on, if so whats the purpose of that… thanks

  49. spinage on February 23rd, 2012 19:16

    Fabian, see comments from Matt and Tony. Hope it works for you!

  50. Colin on February 27th, 2012 19:25

    This works perfect use the Andy tip am chuffed to bits it has saved the costs from the dealers who told me they have there own quick way of doing it but wouldn’t tell me

  51. spinage on February 27th, 2012 22:39

    Thanks Colin, great to hear that it worked for you!

  52. Trevor on March 11th, 2012 17:59

    I too have had flooding problems, twice now! Wish I had found this blog sooner as it would have saved me quite a few £s this time I tried the method of disconnecting fuel pump from under the rear seat, worked a treat.
    Thank you.

  53. george on March 20th, 2012 08:39

    hi,i ran my RX8 out of feul but was not aware of this and she had been stood fot over a week without bein started and when i came to startin her up she would not start and i can hear the feul pump startin up but she is not turnin over properly and it is like there is no feul gettin to her and now my battery is very low,i had heard about some kind of feul sock in with the feul pump,could this be the problem and it just needs cleanin ??? thanks

  54. Dave on April 8th, 2012 12:55

    I left my RX 8 on the drive for a week while I was on holiday. On the morning that I left I moved the car further down the drive so that my daughter would be able to put the bins out for collection, it was about 04:30; so I was reluctant to leave it running to allow it to get up to temperature as it would upset the neighbours.
    Returned from holiday a week later and the RX 8 wouldn’t start. This is the first time that I’ve had any trouble with the car in the 12 months that I’ve owned it.
    I tried everything to no avail. I came across this posting and gave it a try and after about 8 attempts it worked.
    I had originally run the battery flat so during the rest of my attempts the RX 8 was hooked up to my Mazda 6 with jump leads.
    Thank you for sharing this advice.

  55. spinage on April 8th, 2012 13:44

    Great to hear, Dave. Pain when that happens but glad you got going again!

  56. Ralph on April 14th, 2012 11:26

    hi guys ,, thanks greatly. came across all this whilst waiting for my mate to come and tow me,, so cancelled him and did this and car now running ,, took an hour ish and a hose pipe on the starter motor as i believe the smoke means help me im hot ,,, not long had an RX so not yet used to all the quirks like dont just shuffle cars round on the drive as next time the RX wont start ..
    cheers Ralph

  57. KenF on May 12th, 2012 10:13

    Really glad I found this blog.
    I had the same flooding issue after reversing the car up the drive before going away on holiday. When we returned and encountered the non-starting/flooding problem, so I replaced the battery (last service a couple of months ago had advised it was getting low).
    Still no joy.
    I had noticed on other forums about removing the fuel pump fuse, but then I came upon this thread and thought it seemed like an easier option.
    Once I had gingerly removed the seat cushion (wasn’t too sure how it came away, but you just give a firm upwards tug at the front of the cushion) and then followed the instructions.
    At first, after several attempts it just turned over, as per previously attemped flooded starts, but then it fired-up before cutting out again.
    I persevered with the instructions and sure enough she then fired-up.
    The whole process took me about 30 minutes, but has certainly saved me a lot of grief(and money) in getting the local dealership involved. They had quoted approx. £150 to recover the car and undertake a de-flood, so thank you very much for this excellent solution to this issue.
    I wouldn’t hesitate in recommending this solution to other RX-8 owners who encounter this problem.


  58. spinage on May 12th, 2012 18:31

    Thanks Ken. Great to hear it worked and thanks for the extra info (post updated).

  59. Clint on May 14th, 2012 06:53

    Hey thanks for this, as we stay just out of city limits couldn’t get anyone to come look at it. Been trying to get our RX8 going for 3 weeks now. Kind of last resort really. Gave it a shot, nek minnit, life roared back into our wheels. Redemption!!. It did take a wee while and a lot of faith. But it does work and this kiwi at the bottom of the world gets to fly again. Many thanks.

  60. spinage on May 14th, 2012 06:59

    Thanks Clint, glad you got going again!

  61. Peter on May 22nd, 2012 20:02

    A big thank you for this. I recently fitted an uprated starter to my RX8, which works so well, that I had become complacent with starting and stopping the car. I foolishly drove it a few yards, stopped it and went on holiday. Came back and realised (when the car failed to start), with a sense of dread what I had done.
    I followed your guide, but couldn’t quite get the plug back in the fuel pump to make it fire. After recharging the battery, lol, I turned the engine over 4 or 5 times (without trying to reconnect the fuel pump), then reconnected it and tried to start as normal and it fired up instantly.
    Again, thank you.

  62. DN on June 26th, 2012 07:37

    GREAT !!
    Tried the fuse method, after an hour looked up the net & found this.
    10 minutes & she goes !!

  63. dan on July 5th, 2012 08:06

    hi going to try this method today after three days using the other methods and draining my battery 3 times. borrowed a large lesure battery hope it works if all else fails gallon of fuel and a match lol.

  64. spinage on July 5th, 2012 08:22

    Let us know how you get on Dan. Hopefully you won’t need such drastic action!

  65. AndyUK on July 5th, 2012 20:51

    Brilliant, worked like a charm on my R3 edition. Took 10 mins, 8 turns disconnected, 1/3 open, reconnect, fired up 1st time. No need for a 2nd car, battery was strong enough on its own.

    I so wish I’d known this when my previous RX8 flooded instead of having the AA out (TWICE!)

    Thankyou very much :-)

  66. dan on July 6th, 2012 21:34

    hi all i have to say is a maz ing started first time smoked like hell stank out my garage but most important i have a smile on my face again many thanks you are a legend

  67. Mark on July 12th, 2012 04:57

    Genius. Thanks a lot for this tip. My 2005 RX8 flooded for 2nd time ever. Usual story, had backed it out after not driving it for about a week. First flooding time about 4yrs ago, I called for assistance as I had no idea – they did the fuse method which worked after about 20 tries.
    This time however, I tried that already and with dwindling battery power, I called the roadside assistance in and the fuse method still did not work. He was ready to give up, so I asked him to help me try this method (did some research while waiting for him) which he had never heard of – 2nd attempt – success. Really helped having a second person. Waited few seconds until heard the engine trying to start and replaced the connector. Almost worked. Tried again – success. So much quicker this method!
    Thanks again. Will try prevention instead of cure from now on though!

    In my RX8, the back passenger side seat has 2 clips you have to undo at the front of the seat, and it comes straight up. Then after unscrewing, there is a little plug connected to the metal plate, just have to push that through.

  68. spinage on July 12th, 2012 06:51

    Thanks Mark for the extra details about the rear seat. Glad you got going again! Sounds like we taught the breakdown guy a new trick :-)

  69. Shane on September 13th, 2012 03:17

    Thanks spinage you are a superstar , after a few very patient days of trying and re-trying the mazda approach i was 2 minutes off calling the flat bed to pick up my VERY drunk little RX8 , then i saw your suggestion , tried it and after about 10 mins, off she goes,
    absolutly by far the best suggestion yet to solve this problem,
    if this problem happens again i will simply put a toggle swith under the dash, so no tools required….

    thank you again LEGEND,


    NSW Australia

  70. spinage on September 13th, 2012 19:45

    Thanks Shane, and that’s a great idea to put a toggle switch somewhere more convenient!

  71. Paul C on October 5th, 2012 12:00

    Worked like a charm cheers. Tried the fuse method with little joy. Used this technique n got going in minutes!!

  72. Darren W on October 13th, 2012 23:53

    Awesome!!! Car been stood for nearly a year with a flooded engine!!! Took around 8 tries and another charge with a new battery & jumper car but got it going with this technique, many thanks, didnt think it would go but after running it at arount 4000rpm for around 20mins the engine sounded on song again….even with the old fuel in the tank!!!!

  73. spinage on October 14th, 2012 08:29

    Hi Darren, glad you got it going after so long out of action!

  74. Ken on October 24th, 2012 20:30

    Flooded my RX 8 on sunday, moving her to let the mother in law get out. (Prob need to get a slimmer mother in law). Tried the foot to the floor method, no good. Tried this method tonight (great simple to follow instructions) but although it started to sound like she was going to catch still no good. Battery back on charge and try again 2m.

  75. spinage on October 24th, 2012 21:38

    Hope it works Ken!

  76. Ken on October 28th, 2012 09:35

    Mate, thanks for this finally worked after about 20-30 minutes and saved me a few hundred pounds I’m sure. There is a knack to this and would def recommend
    1. Resist the urge to reconnect the fuel pump too early (I think I reflooded it a couple of times). See post 37 about cranking it dry before reconnecting pump.
    2. Get a supplementary power supply (another battery, jump leads to another car etc) when you do this as usually you’re going to need it.
    Reset the Traction Control by following the manuals instructions, now all that’s left is the ‘Check Engine Light’ which stays on.
    Any ideas anyone?

  77. Stuart M on October 28th, 2012 15:58

    This post is the gift that keeps on giving!

    After about half an hour of perseverance, pretty much following the initial instructions word for word, my poorly RX8 fired back into life.

    Many many thanks

  78. spinage on October 28th, 2012 20:05

    Thanks Stuart, pleased to hear that!

  79. Josie on November 12th, 2012 21:11

    I moved my car a few feet to move it from a 24 hour parking space and flooded it. IT won’t start i’ve tried everything. Now im sending my dad to go look at it and try your mehtod i hope it works.. hes not a fan of my car because he doesn’t know how to work on them. *fingers crossed thanks for the help!

  80. Andy M. on November 13th, 2012 04:31

    Flooded my Shinka for the 2nd time this weekend. First time the dealership fixed it free (Years ago). Found this article and it worked great! Thanks for the easy step by step instructions for a guy who is admittedly terrible at anything related to car repairs.

    Andy in Oregon

  81. Gill on November 14th, 2012 09:14

    SOOOO glad I found this! It’s the third time I’ve flooded her, I should know better by now. The first time, I had her towed away and fixed at the dealership. The second time I managed to get her started using the instructions in the owner’s manual.
    This time, she is well and truly flooded and nothing’s working. I followed your instructions (no mean feat for a girl who can barely locate the petrol cap!) but I’m not very tall and my arms/legs just aren’t quite long enough for me to do this on my own.
    I’m now waiting for a friend to come round with jump leads and an extra pair of hands. Fingers crossed …

  82. spinage on November 14th, 2012 14:05

    Thanks Gill, hope it works out!

  83. Gill on November 16th, 2012 06:44

    Whoop, whoop! My baby has just coughed and spluttered back into action!! Spinage, you are now officially my new best friend. :-)
    Due to various time constraints, we weren’t able to try this until just now. Timing seemed to be the key for us, it took about 8 attempts but I think I was reconnecting the fuse too soon.
    If you listen, you can ‘hear’ when it needs to be reconnected.
    First couple of times the engine caught, it died again almost straight away, but the third time worked like a charm.
    Neither OH nor I have any real clue about cars but we managed to get her going thanks to your wonderful instructions.
    Many, many thanks.

  84. Gill on November 16th, 2012 06:48

    Oh and we are in Cyprus BTW. Looks like you are turning into a world-wide hero!

  85. Robert Evans on November 17th, 2012 10:33

    Great tip am a mechanic of 30 years tried everything no go first try with your suggestion bingo
    Robert Evans

  86. spinage on November 17th, 2012 11:16

    Thanks for the follow up comments Gill. I’m really pleased to have helped you all the way over in Cyprus!

  87. spinage on November 17th, 2012 11:17

    Thanks Robert, great news!

  88. martin on November 21st, 2012 13:28

    last night i ressurected a rx8 that i have just bought of a chap at work. “so what ?” you ask. well…. how about the fact that it hasnt started in 3 years!! bearing in mind the fuel in the tank is three years old and the car has been sitting outside growing moss since 2009, i wasnt expecting it to work. but after 18 minutes it started. shocked doesnt begin to describe my reaction. SPinage, thank you!!
    i still have to replace the rusty brakes and all the fluids and i’ll prob replace the coils/leads/plugs too but at least i know that my gamble paid off and it wasnt a lemon.

  89. spinage on November 21st, 2012 13:54

    What a great story! Thanks Martin.

  90. Kei on November 29th, 2012 10:30

    i have my rx-8 2004 and its been flooded for 6 days now, its been towed and in the repair shop now but they said it will cost so much price to pay and time to repair, so i decided to bring my rx back home, i hope this work :( i tried the full accelerator and fuel pump puse method but ddnt work, im thinking of selling my rx because of this problem, but i hope this works and no other problem in the car, thanks!

  91. Steve on November 29th, 2012 15:01

    Thank you so much. after 7 years I made the boob of moving the RX8 out of the drive and stopped her.
    I bought a new battery and linked up jump leads, it took about 30 min, but it worked.
    Mazda in Northern Ireland wanted £380 to do it, it cost me £78 for the battery and 30 min of time.

    Thanks again.

  92. spinage on November 29th, 2012 15:32

    Thanks Steve, interesting cost comparison too!

  93. Kei on November 30th, 2012 12:14

    it works spinage !! life of my rx-8 ressurected, it only took maybe 20 minutes! thank you so much !

  94. spinage on December 3rd, 2012 13:09

    Excellent news Kei.

  95. shadow blasko on December 16th, 2012 20:27

    Worked like a charm mate! Excellent job! Saved me a ton of heartache!

  96. Alan C on December 22nd, 2012 23:38


    With regard to removing the seat, does it make a difference if seat is leather?



  97. spinage on December 23rd, 2012 08:27

    Alan, leather seats are just the same (my seats were leather).

  98. Alan C on December 23rd, 2012 19:25

    Thanks for that.
    Away from home at the moment and will give it a try. Hope the 3 week delay won’t make things worse?
    All the best.

  99. T Smith on January 1st, 2013 21:24

    Thank you for the information. After about 7 tries, and a good deal of exhuast fumes, it started. Thanks again.

  100. Paul on January 3rd, 2013 09:29


    Thanks for the tip.

    I was having no joy with fuse removal procedure. It would catch a little but could not get it started.

    I had it running within five minutes using this method. The secret is catching the initial firing and supplying fuel at the right time. The engine will crack faster when flodded and when it slows and sounds like it may catch reconnect the fuel pump. I had to disconnect and reconnect 3 times but it caught. Pressing the accelerator is very important it seems. Instead of depressing a 3rd of the way down I started with the pedal fully to the floor and bringing it up as it fired. I found it necessary to modulated the pedal in order to keep the engine running.

    This method is easier than it sounds when reading and once you try it you soon get the hang of it. The seat bolster was very easy to remove for people with concerns. Just pull it up hard from the front edge.

    Thanks again!

  101. spinage on January 3rd, 2013 09:38

    Thanks Paul, that’s really helpful extra detail.

  102. robbie on January 3rd, 2013 17:47

    Firstly thanks a million just got my rx8 restarted after i flooded it took a bit of effort but shes purring again only problem is engine management light is on is this because my battery died whilst trying to start? is it an easy fix thanks a lot!!!

  103. spinage on January 3rd, 2013 19:53

    Hi Robbie, I seem to recall that the engine light stays on until you’ve started then stopped the engine a few times. After that, it goes out if there is no longer a problem.

  104. Andrew on January 5th, 2013 20:50

    Hey guys. In the uk here .. i have runflat tyres on my baby and i drove a few yards last week n noticed one of the tyres had burst so i just reversed back into my driveway a left it … about a week later i went to take it down to get the tyre fixed and BOOOM nothing .. so i charged the battery … now im getting that sound that is on youtube that means the engine is flooded … tried the fuses method and all that .. well nonsense 😛 .. ive not took the spark plugs out yet .. i think ill try this method first !!! im really worried ive totally fooked the car :( … ill give it a blast tomorrow then ill let you know !!! cheers in advance !!!!

  105. Andrew on January 5th, 2013 22:12

    sorry to be a pain mate but also … al lot of fourms say wait till it sounds like theres compression back … what does compression sound like lol?

  106. Andrew on January 5th, 2013 22:14

    and def the last thing … when i crank it with no fuse for fuel in .. theres no white smoke ??? should there be?

  107. Mark B on January 7th, 2013 08:35

    Thought I would post my experience of this issue…I had the RAC out to my flooded RX8 last night. The mechanic said that the procedure of starting the car with the accelerator pedal fully depressed has the same affect as disconnecting the fuel pump. He said he been dealing with rx8 floods for 6 years, he said you just need jump leads as battery will flatten pretty quickly otherwise.

    He basically connected jump leads and turned the car over 10 seconds at a time with pedal depressed, he repeated this several times, resting the starter motor for a couple of minutes each time. Finally he cranked the car without pressing the pedal at all. Car spluttered but didn’t start. He just repeated above 3 times, each time engine sounding better, with more and more smoke coming from exhaust.

    In my case it took about 20 minutes, but he said it can take much much longer. I showed him this blog, but he said effectively what he did was the same thing without the additional hassle. Cranking the engine on the starter motor WILL eventually unflood the cylinder – it just can take some time. He also mentioned some older rx8 had less powerful starter motors and that can have a bearing on how long it can take.

  108. spinage on January 7th, 2013 09:35

    Hi Andrew, try looking through some of the comments here, there’s some really good extra tips. Hope it gets you going again!

  109. spinage on January 7th, 2013 09:39

    Hi Mark. I’ve had that experience too, as you say it can take 20-30 minutes, which is often more than the battery can bear (unaided by a spare power source). This technique is often quicker therefore handy when you don’t have long :-)

  110. Brad on January 10th, 2013 22:45

    Like several of the above owners, my 05 RX-8 flooded due to my father-in-law starting it while we were on a family vacation and not properly shutting off. The last 3 days were stressful to decide what to do, as we live in rural Ohio and the closest dealership is 50 mi. After purchasing a new battery and trying the pedal-to-the-metal approach, I was close to throwing in the towel and calling for a tow. I decided to do a bit more searching, found the idea about the #22 fuel pump fuse removal, but repeated attempts didn’t pan out. Finally I stumbled across this crazy idea of a back seat fix. I initially thought it can’t be any better than the other methods, but after reading all the success stories, I had to give it a go. I stuck my wife in the back seat to control the fuel pump connection while I worked the ignition and gas pedal. I tried about 6-8 attempts with the pump disconnected, each about 10 seconds long and resting the starter 10-30 seconds between each try. Then we tried 3 seconds, connected it, and had some good sputtering noise. We followed the same approach another 2 times, and finally got it. From the time we got the access plate off, the it took 15-20 minutes until the engine turned over. It was great to hear that purr once again! I agree that a strong battery, a 2nd person, and depressing the gas pedal 1/3 to 1/2 are keys to success.

    Anyone reading this blog and wondering if it works, I’m proof positive. Spinage, a huge thanks to you and for everyone else helping out your fellow RX8ers.

  111. spinage on January 11th, 2013 10:53

    Thanks Brad, that’s a great story and hopefully the extra detail should help others too!

  112. Jon on January 19th, 2013 19:32

    Started it in about 30 minutes!! Didn’t want to mess with the rear seat/fuel pump scenario, so I fabricated a jumper from the fuel pump fuse. Really simple and works like a charm. Gonna keep it in the car in case I need it again. Just remove the fuse and install the jumper. Then crank the car with the circuit open to stop the pump and get rid of the excess fuel. Rest the starter a bit, then try again while listening for signs of engine life. When you hear the engine firing, close the circuit very briefly and repeat until it improves. May have to stay on the starter a few seconds until the engine smooths out. Took a couple of tries but no big deal really. Enjoy!!

  113. spinage on January 19th, 2013 20:13

    Thanks Jon, great idea to make a jumper that you can keep for future use.

  114. Alan on January 22nd, 2013 16:12

    Hi, I tried this method and got the car to initially fire up but it wouldnt catch properly and died. Couldnt get it restarted again so had to succumb to the dreaded Mazda garage. They took out and dried the plugs and then checked the coil packs and found 2 of them faulty along with 2 dodgy plugs guess there was little chance of starting it with those probs!!. Car had been for a service about 6000 miles ago and they hadnt found any issues, makes you think huh. Anyway, I’ve ordered a new coil pack which will be delivered tomorrow and hopefully they can get her started. Didnt buy the Chinese ones!! but was able to buy 4 for the price that Mazda wanted to charge me for 2, got them from RBMotorsport. Anybody tried the Volo VP12 chip upgrade yet?

  115. David on February 3rd, 2013 14:14

    I’ve never shut down my RX8 while cold due to it flooding the engine, but unfortunately I didn’t tell my dad this when he moved it off the drive while I was away. It’s pretty worrying when you come back and find it won’t start but this technique came to the rescue.

    Just wanted to say thanks to the owner of this blog and other posters, this technique worked a treat and was realtively simple to do.

  116. spinage on February 3rd, 2013 17:03

    Thanks David!

  117. Jack Savage on February 6th, 2013 09:22

    You are literally my hero! My girlfriend’s Dad moved my car 10 metres and turned it off in the cold weather without leaving it to warm up. Went to start it the next day and got nothing but starter motor! Got myself some jump leads and put your technique into practice and with a big cloud of black smoke she spluttered into life… Took a fair few attempts but it all worked in the end so just keep at it. Good luck!!!

  118. spinage on February 6th, 2013 10:34

    Thanks Jack, that’s great to hear!

  119. Mark on February 15th, 2013 21:33

    Wicked, worked a treat, took about 20 mins but only coz the leads I was using were Kak, left the pump disconnected turned it 3 to 4 times for ten seconds each then connected the pump, turned it over again with NO throttle twice then half throttle 2 more times and it went, when it did I went to about 5000 rpm for 20 secs then left it to idle for a further 5 mins and then took it out for a good hammering, running sweet again, thanks a lot !

  120. Andy Minor on March 4th, 2013 14:05

    We had some building work done and I had my leg srapped up with torn ligaments so the builder moved my 2005 RX8 and lo and behold wouldn’t start a few days later (his ears must have been burning )After much cursing I came across this thread and gave it a go.To cut a long story short this worked a treat and I’m truely grateful.

  121. spinage on March 4th, 2013 14:14

    Great to hear Andy – hope your leg is better too!

  122. Bazza on March 21st, 2013 16:17

    I hope this works. I was moving cars around on my drive because I needed to do some work on one of the others cars. Tried to start the 8 after I moved it but no go. Tried all but to no avail, will try yours after I charge the battery up.

  123. Martin on April 3rd, 2013 08:56

    Just read through all the success stories and was also put off initially by the description of the process despite being an engineer who used to change his big ends regularly (30 years ago mind)

    Process is actually a doddle but watch for the sharp edges on the fuel pump cover – added a little blood to my sweat from the previous day!

    Engine fired up immediately – didn’t have to wait at all. Probably helped by trickle charging battery overnight and having first day of sun in London for many months….

    Great one Slipage!

  124. Damien on April 4th, 2013 22:50

    This is a life saver. Flooded my wifes RX8 this morning moving it so I could get my car out. She was not a happy bunny

    Get the jump leads out and persevere with this method it works !!
    Thanks so much

  125. Matt on April 15th, 2013 23:49

    The advise on here has really helped.. It took a bit of time to get going but after taking both the fuses out you could feel that my rx8 really wanted to start up again.. 3 more cranks and we were off… Honestly couldn’t of got my car going again with out the tips on here…. Cheers

  126. viv on April 23rd, 2013 06:44

    Flooded the car for the third time, (first time coz i was stupid and second time by a mechanic who didnt know his rotary- cost over $6000 all up for a new starter motor and labour so very upset)

    def shouldve known better but was in a rush to move the car out of the way for the brother to get his car out and go back to sleep.

    I really didnt think this method would work after seeing no change in engine sound using the fuse in fuse out method, it was hopeless. but after reading how many successes there was on here i gave it a last ditch effort before calling mazda to tow it

    pleasantly surprised to find that we got it purring within 15 mins! AMAZING! THANKYOU SO SO MUCH you saved me lots of money!

    having a friend in the back helped alot, i recommend this to everyone! <3

  127. Rob on April 24th, 2013 03:09

    You rock. This is the third time I stalled it after a short move. First time $300 or so for the dealership to drain it. Second time $1500 for drain and eventual plug/wire changes and maintenance. Third time was a Sunday so I had time to try this. 30 minutes later the car was purring like a kitten. Note that the check engine light may come on, but after a day and a few starts it cleared. Thank you from Milton, Ontario, Canada.

  128. Bruce on May 9th, 2013 02:05

    Wow. This was my 3rd time to flood my 2004 Rx8 – the first time cleared quickly with the pedal-to-the-metal trick, but the 2nd time happened away from home and resulted in the costly trip to the dealer, fresh plugs and a drained bank account. This time happened in my garage, and so I wasn’t about to call for a tow. Disabling the fuel pump wasn’t much help.
    Since I’m in the US, the position to get the clutch down, the accelerator pressedr and the key turned was pretty awkward, but it worked after awhile. It’s straightforward, once you get the hang of it……

  129. spinage on May 9th, 2013 06:32

    Thanks Bruce, that’s interesting. I can imagine how it would be a more awkward stretch from the driver’s seat on the left rather than the right. Glad it still worked though!

  130. Bruce on May 9th, 2013 14:25

    Once I had the seat back, it wasn’t as painful as i had expected. I’m feeling pretty good today. But it would be much more difficult if that connector wasn’t within reach. Thanks again!

  131. Anthony on May 20th, 2013 22:25

    Just about to give up and list my rx8 on eBay as a non runner and stumbled upon this post and thought I’d give it a go.
    Waited for the wife to come home with her car for the extra power from her battery, got seat out practiced removing plug and went for it! Took around 10mins and the rx8 spluttered into life like a swimmer having CPR after drowning in a pool. Gave it some gas then let it settle on tickover whilst the street filled with smoke.
    Took her for a blast and couldn’t believe I did it! Awesome. Thanks for taking the time to write this info, so chuffed to have my car back on the road. Thanks a lot man.

  132. spinage on May 21st, 2013 06:33

    Thanks Anthony, great story and pleased you’re up and running again!

  133. TimboMachino on June 3rd, 2013 00:18

    Spinage, you’re amazing, thanks so much for this blog. Here’s what happened to me…
    I moved to Northern Ireland back in November ’12 and I’d been here just 2 weeks when the Rexy died on me. I suspected the coil packs, as I’d had everything else done a few months earlier. Trouble was, I couldn’t afford the fix at the time. £350 for the coils and the leads was just too much as I was still looking for work.
    So my beloved RX8 has been sitting on the drive for 6 months while I had to suffer using the Wife’s car. Recently I was finally able to get the kit I needed and did the work.
    When my car was first recovered to a local garage they decided it would be a good idea to keep on turning the engine over with the fuel pump fuse removed. It didn’t start, obviously, and they advised me that she’d probably need a re-build. Anyway, I had no idea if they’d flooded it, or even done more damage.
    After re-fitting new coils and leads I came to stat her up and – nothing.
    Did a quick online search and found your blog here and followed the instructions and, after a lot of patient turning over – finally I hear the sweet sound of the Renesis once more.
    At one point, towards the end, I was thinking ‘this is never going to work’ and that’s when it did.
    If I could I’d buy you a good few beers, you deserve it. Thanks once again and I hope this blog will help many more people who, like me, were close to spending a bunch of cash on a mobile mechanic or giving up all together.
    I love you Spinage!

  134. spinage on June 3rd, 2013 09:19

    Thanks Tim, what a great story and outcome. You’re most welcome!

  135. TimboMachino on June 3rd, 2013 17:58

    Btw: as a post-script to my post above, I’d just like to add this:
    If anyone suffers cat damage as a result of flooding I can highly recommend cats2u. They only do cats but their customer service is brilliant.
    I bought one off them last year coz mine had the dreaded rattle and they sent me one out by courier. A couple of weeks after fitting the new one was rattling as well. I called them up and they sent out another one (more expensive type than the first) at no cost.
    All they asked for was an emissions read-out to prove the cat was broken.
    Hope this may be of help.

  136. Mark Mumford on June 17th, 2013 07:16

    Flooded my 2005 RX8 – bad coils and carbon buildup requiring an engine rebuild (paid by Mazda under warranty) but now I have this terrible feeling that the thing isn’t going to start. Love the RX but the reliability issue is a drag. Does anyone know why this method works? By turning the engine dry for 10 seconds repeated several times, I understand that the engine spins out the accumulated fuel. But once the accumulated fuel is out, why doesn’t the engine start? Some of the posts suggest to reconnect the fuel pump when you “hear” the engine sputter – is this sputter the plugs (now drying) beginning to fire again? I understand that one of the reasons the rotary will not restart is loss of compression. What causes the loss of compression and how does the engine regain compression? Any insights?

  137. Nikki Murray on July 19th, 2013 17:44

    Oh my god, thank you so much, I have had this car 2 weeks, thought I was playing by the rules re engine hot enough, but I flooded it, waited till hubby got home and did as you said with the pump, amazing we did it straight away, so happy, as didn’t want it taken to the dealership £££££ and we r on hol 2moro morning, was so stressed, ssssoooooooo happy I read this discussion. Thank you thank you thank you. I spoke to a friend of mine on fb who I haven’t seen for a long time but know she has an rx8 too, she said she has had hers for years with no problems but the dealership told her from word go that you should always run the engine for a couple of minutes before setting off, and give it a couple of big revs before turning off, she does this every time and has never had any problems. Thank you again.

  138. Nikki Murray on July 30th, 2013 20:23

    And back to square one again after returning home from holiday, just about got it started this way this time nearly gave up,took it out for a long rag, and gave it a couple of revs before turning off, wouldn’t start today, good job we have a second NORMAL car, starting to think this beautiful car is not worth the hassle :-(

  139. Sonny on September 9th, 2013 03:39

    Hi, I’ve got a 04 RX8 (42k) I’m from London and today got a problem with the RX8! turns out I’ve flooded my engine as moved the car and turned it off straight away. From starting it to turning it off lasted not even 2mims. Normally I turn it off when it’s warm but for some reason I f****d up :( anyway I came up with a very easy way to get car started after flooding problems and no compression. I put the tow bar on and attached it to my brothers skyline. He pulled me down the round and I started it by putting it in 2nd gear and bumping it. I couldn’t beliv my luck as only thought of the idea sitting on the sofa with a cold pint. Worked straight away and now car starts fine Everytime. Try it and let me no it it works for you too.

  140. Jas on September 17th, 2013 03:35

    I’ve had the engine on mine flood after watching a video on YouTube and trying out stuff myself since I don’t want to take it to Mazda and pay $800 I realized it takes a few things and about 30-40mins. But be patient it will work I have done it on my car and some random rx8 I saw with a cute broad stranded in downtown vancouver one day 😉 works every time

    1.put jumper cables on car with another car even if battery is fine
    2.hold throttle down and pump 8-10 times before turning ignition
    3. Do this at least 5 times and then stop and step on the pedal and hold it for about a minute just continuous holding.
    4 repeat number 2.
    5. If it still doesn’t work you need this next step open gas door and take off the gas cap, all the built up carbon will release and you when u go to start it might not start but it will sound like its about to.
    6. Put gas cap back on and do step 2 again.
    7. Take off gas cap and do step 2.
    8. Your car finally started! You will get some white smoke coming from the exhaust it’s just carbon dont worry about just make sure when your doing this its not inside the garage do it outside somewhere. Let the car run for 10 mins and use as much as as you can empty the tank as much as possible and fill up with 94 octane to clean out the engine. Hope this works for you guys as it has worked for me numerous times cheers :)

  141. spinage on September 17th, 2013 06:38

    Thanks Jas for an alternative method.

  142. Alan Ramsay on September 19th, 2013 20:45

    I moved my car a few feet to let the neighbour have more room and i forgot !!!,anyway i knew there was a decent answer to my prayers as a friend at work has one and fooded his and sent me in thisdirection and thank you very much !!! 5 times i plugged and unplugged and away she went with a huge cloud of white smoke took all of 4 minutes start to finish -pun not intended but you well saved my bacon , works a treat, all i can say is i live in the north east of scotland 70 miles from a mazda dealer , save this and print it off , THANK YOU !!!!

  143. spinage on September 20th, 2013 13:43

    Thanks Alan, great to hear from you and glad you got it going again!

  144. julius on September 22nd, 2013 12:47

    hi guys, thanks alot. the fuel pump fuse disconnected and reconnected works, the problem am finding is my little monkey rx8 2004 is sparking like bullets and it really scares me to drive it because of neighbours. what could be the problem? help plse.

    thanks .

  145. Fred on September 28th, 2013 20:56

    This method worked great for me. 2006 RX 8: First time flooded in 7 years. (I also jump it up to 2500 – 3500 rpm before turning off when not at normal operating T. This time my wife moved it forward 20 feet and just turned it off.) Took about 20 min. Would have worked faster, but I chickened out the first two times it started and let up on the throttle causing the engine to die. Would not start again until I went through the method again. I do wonder what the unburned fuel through the catalytic converter will do to it.

    Thanks!! (Southern California)

  146. Trevor on October 10th, 2013 03:30

    Thank you so much just tried this on my girl friends car after trying the other methods first it took me awhile to get the hang out of it but worked awsome really saved me had no idea what I was getting into with the rotary motor!

  147. Trevor on October 10th, 2013 03:31

    From eastern Washington

  148. steve on October 19th, 2013 10:27

    Hi.great advice that works!Just had a thought.Fit a pump kill switch,and stop the car using that before turning ignition off when cold.Should stop possibility of flooding?

  149. spinage on November 3rd, 2013 13:49

    Thanks Steve, that’s an interesting idea! Let us know if you try it and find it works?

  150. CJ on November 7th, 2013 02:15

    Well, daughter flooded the RX8…again. First two times it went to the dealer. Yeah, that hurt. In extreme refusal to hand over my cash to them again I dug pretty deep and found this post (don’t know how I missed it the first two times). I’ll be trying it in a day or so when I can get over to the college, hoping my lick holds as everyone else s here did.
    Steve – upgrade to your switch idea. Use a momentary switch as the cut off. That way you avoid the problem of forgetting to turn it back on next time you start it up.

  151. CJ on November 13th, 2013 23:14

    West Central Florida, US
    Finally made it to the college. The short of it, it is running again. But took a lot to get it there. a couple hours one evening just trying to dry it out with a half discharged battery and a weak booster set up, then the next day about three hours. Doing process exactly as written above did not work (although it was trying to), but a combination of that and another post above did. Spinage’ got me almost to where it would stay running but didn’t quite get over the hump. What worked:
    Trickle charged the battery overnight. Got a big @$$ battery charger/starter (150 amp) and connected. Cranked engine for 15 to 18 seconds with fuel pump disconnected (did not connect pump at all) and shut off key. Wait min of 2 minutes (104K on it everything is getting a little weak so going easy). repeated 15 times until engine was almost running on it’s own for a few seconds. Yes, it did that with pump disconnected, that’s how I knew I was getting close to clearing all access fuel out. Cranked engine about 5 sec, plugged pump in while cranking. No joy. Engine stopped trying to start. Repeat clearing process 6 times. Second time I took a piece from Mark B. (post 107) and did not press the pedal at all. It fired up slowly and as rpm increased I slowly pressed the gay. Spun up to 5K and the party began. I think mine took extra time because it is old and cranking speed was a touch low, even with the big jumper.Here’s some observations:
    1. The fuse pull and pedal to the floor methods probably work too, but people give up on it too early after not enough tries (guilty). But it is easier to choreograph the key, fuel and pedal at once using this method.
    2. cranking RPM is everything. If it’s even a little low, it will prolong the time it takes to clear the engine.
    3. When cranking, resist the temptation to release the key when there is a little sign of it trying to start. Hold it until your ready to rest the starter, no matter how much it sounds like it is starting. You’ll know when it’s ready to take off and run. The more it belches, the better.
    4. Be prepared. Especially when in an apartment complex parking lot. Two things to think about – restroom and drinks. You don’t know how long you’ll be there. Nearby woods will work, and I think a six-pack would suffice.
    Cheers spinage. didn’t work perfectly (as every car is different) but you definitely got me where I needed to be and saved me some serious coin. Thank you.

  152. Mark Mumford on November 24th, 2013 23:19

    Although this was posted in 2010, it lives on so long as RX8s continue hum along the roads. I was wondering if anyone has tried this method using a modified fuse which is inserted in place of the 20 amp fuel pump fuse. The modified fuse has the fuse element severed so that there is no current flowing between the fuse contact blades. The blades are wired via a long lead that reaches into the driver’s position and at the end of the lead is a switch. Rather than disconnect/connect the pump through the hatch under the rear seat (as described in the post), the disconnect/connect operation can be achieved via the switch attached to the modified fuse. Comments?

  153. Lori on December 11th, 2013 03:40

    Hello Spinage
    You are my hero. Last week, I moved my rx8 from drive way to my garage after washing it and it wasn’t started. I tried the Mazda way, pedal to the floor with no luck. Tried to remove the pump fuse after removed and cleaned spark plugs, it didn’t work either. I started thinking about $500 to fixed it by Mazda. Came to your method. Removed the seat ( the one behind driver seat because I am in USA) It’s very easy, just pull the front of the seat hard up. Removed the cover, found more problem. Got fuel leak from the outlet of fuel pump. No wonder it used a lot of fuel. Temporary fixed it by epoxy and fishing string. At the same time I Cut the black wire and made a switch (I could not reach the pump plug as you showed. I did not cut the hot wire because I afraid it can affect another components). Cranked engine three times. Fourth time I started turn on switch after 10 second cranking. After 3 times, engine seem like want to go and at the fifth time life came back to my engine ! Not a lot of smoke came out because I did clean combustion chamber by compressed air when I removed spark plugs. It took me only 10 minutes to get the engine running.Now my car goes like before. I am going to keep my switch in my car but hope that don’t need it one more time.
    You saved me a lot of money and headache

  154. spinage on December 11th, 2013 08:38

    Thanks Lori, some helpful extra tips there.

  155. nc on December 14th, 2013 21:11

    just found your thread. Read it all. I have definately flooded my 2007 rx8, as it has never failed to start before. yesterday, moved it on my drive. engine only on for 15 seconds. today – wont fire all all. tried pedal to floor. tried fuse out. battery pretty flat now.
    I will try this tomorrow, with jump leads.
    I hope i am not the first one to fail after so many successes!

  156. nc on December 15th, 2013 14:47

    Amazing. I was a bit cynical before, in case this was some kind of weird cult, but it is true.
    Getting to the pump was easier than I expected. My jump leads are the cheapest ones, and my other car is a new but small Nissan juke.
    Took me a minute you have to put your hand through the steering wheel and not around it, if you are to reach the ignition and fuel pump at the same time.
    I needed to do a LOT of cranking to get anywhere, all with the pump disconnected. It just turned over, and over, and over without firing for ages. I kept the cranking to ~ 30 second bursts to avoid melting starter motor, and waited 2 minute gaps to allow starter to cool.
    After long cranking, it does slow, but I think this is serious draining the helper battery, rather than cleaning the rx8 of fuel. Another reason for controlled bursts on the starter.
    Only when I heard it kick a fire from the sparkplugs did I push the fuelpump connector in. Had to repeat a few times, and it took me about an hour altogether. Most of the cranking with pump disconnected, only connecting when I could hear it ‘firing’ in addition to just turning over.
    I think this is a better way than taking the fuse out, as with the fuse method, you have to stop when you hear it firing, and go and put the fuse in. With this you can keep cranking, and push in the connector. As said in other posts, do keep starter motor going on ‘crank’ for a short while after engine starts, to support it during early struggling period.
    Thanks so much.

  157. spinage on December 15th, 2013 19:12

    Thanks for letting us know how you got on, glad you succeeded!

  158. Marine one on one on December 20th, 2013 00:47

    Thank you thank you thank you…..WOW…WOW…WOW this works…Bloomington Indiana home of the IU Hoosiers.

  159. cleveland, ohio on January 11th, 2014 03:01

    I think your blog is my last cry of desperation for my rx8!! after backfiring and stalling when I went to start it on an extra cold morning this week, I was almost certain I flooded it…after doing the fuses, and everything but jacking up the car in the snow to remove the plugs – I was beginning to wonder if it was something else…in the morning I was going to brave the cold and remove the lower plugs and replace them with new ones, but after reading about you, and all of the people that have left comments, I feel a small flame of hope ignite in my desperate heart that I might be so lucky… instead – I’m going to try your method before digging my car out of the snow…

  160. Jamison Ford on January 21st, 2014 21:11

    Thank you so much for sharing this, after being on holiday for 2weeks I really missed driving the 8 but came back to a flat batt and subsecuent flooding, your a star and have saved me time effort and needless to say money.

    Worked like a charm!

    Thanks again

  161. Jamison Ford on January 21st, 2014 21:14

    forgot to mention I’m in Jersey Channel Islands…

  162. spinage on January 21st, 2014 21:23

    Great to know and glad you got going again!

  163. Kah on March 1st, 2014 11:24

    I flooded my engine for the first time and the Roadside Assistance guy didn’t even try to deflood it. So I turned to the internet and found this. I tried the procedure with great hope, and followed it. No spluttering for about 20 cranks at 10 seconds each. Then followed what other posters had done like foot to the floor and bringing it gently out. About 3 times did she try to catch. Still no success. I went back to the original instructions, cranking it and waiting for the sputtering to reconnect the fuel pump. Still nothing. I would have cranked it 20 times for 10 seconds (with a 2 min rest) and reconnecting after 10s for a few seconds and disconnecting. Then I had to stop as the battery had been used up. I recharged it overnight.
    The next day, I bought another battery as a booster. I also sprayed a squirt of starter fluid into the air intake after the filter. I cranked it for 20s, reconnecting after 10s. It tried to catch once with the foot to the floor method, otherwise, I had the accelerator at 1/3 depressed. Still wouldn’t start after another 10-15 tries.
    I just get the started motor turning, but I only heard the usual start sound a couple times. I am not sure if I am doing this right. Do you wait until you hear it trying to “catch” or the usual starting sound before reconnecting the fuel pump connector?
    Is pushing the gas pedal making any difference since the fuel pump is disconnected?
    I can’t try the tow/push start method as it is in a valley, and I have not time left to try.
    I’d really like to get her started without taking it to the mechanic.. It’s a pride thing. I like being self sufficient.
    So I’ve so far tried it about 30-40 times and spent about 2hrs. I’m jealous of others who have succeeded.
    Any help would be appreciated.

  164. Ade on March 1st, 2014 14:58

    My partner flooded her rx8(blonde) pulling off the drive and not warming the car up first, then informs me car won’t start.
    Had a look and did not know what the problem was, went on line and found some info but did not work looked again this morning and found this link and tried it and guess what got the car going after a few attempts and if you follow the instructions it will work and you can hear it trying and eventually firing up and away you go Thanks for the info, did exactly what it said in the screen.

  165. Debbie Flint on April 14th, 2014 19:49

    Just done it!!! That will teach me not to move my car up the drive and then just turn it off cold. Thankyou so much for sharing xxx Leicester England…..grateful x

  166. spinage on April 14th, 2014 20:46

    Great stuff, thanks Debbie!

  167. Nestor on August 13th, 2014 08:09

    Spinage, you the man. I did the starting-and-stopping-without-warming-up thang and was left with a well-flooded ’04 Rexy. Did usual throttle tricks, did the fuel pump fuse thing. No luck. Did the fuel pump hokey cokey as documented above and was back in business in just a couple of minutes. Thanks very much – this is what the Internet is for.

    Nestor, from England.

    PS using jumper leads from an idling car alongside helps give the battery a bit more poke whichever technique you’re using.

  168. spinage on August 13th, 2014 09:16

    Thanks Nestor, glad you got going again! Good tip about the extra battery too.

  169. russell on September 7th, 2014 19:57

    that was a great tip for starting when flooded. I just kept turning it over and putting the cable switch on and off the connector on the fuel pump until it fired up. with a hell of grey black smoke. thanks for that.

  170. Mike on September 11th, 2014 18:17

    Thanks very much for the fix, tried allsorts to get it started, was starting to think it was gonna be a huge repair Bill. This method worked and the car is now running……….Thanks again your a star :-) :-)

  171. spinage on September 11th, 2014 19:46

    Great to hear Russell!

  172. spinage on September 11th, 2014 19:47

    Thanks Mike, you’re welcome!

  173. Kenny on October 25th, 2014 03:02

    Ya well i flooded my rx8, from diagnostic to fixing it took me about ten minutee thanks to you man!
    Preciate it , cheers

  174. Kate on November 1st, 2014 18:42

    Thanks Spinage, it worked!

    Just a few tips for those who fall into the same traps I did. Firstly it is not important to reconnect the pump whilst cranking. In fact I found that seemed more likely to re-flood, especially if you’re used to starting reluctant carby cars – I re-flooded by hearing her almost catch and putting in a bit more gas whilst cranking. This does not work!

    In the end it took about 20 mins (after an hour wasted reflooding twice) – now I know how it should sound, if I’m ever stupid enough to flood her again, I have the trick!

    As previous posters have said – connect spare car with jump leads before you start, crank for 10s, throttle 1/3rd depressed, with 1-2 mins rest in between for about 10 times then she should fire and run on the fuel in the D. Once this has happened try dry cranking for another couple of 10s bursts, then reconnect fuel pump, wait 1 min and try cranking. If she doesn’t fire, stop immediately and try dry cranking again. Repeat last two steps until she catches. No white smoke for me and she runs just fine. Engine check light is still on after one normal start after fixing, but from reading other posts it just takes a few start cycles before this should clear, which makes sense given how OBD tends to be designed.

  175. Baz on November 14th, 2014 15:18

    Fantastic tip !!! managed to get the RX8 going last night using this method
    after trying everything else
    Great !!! and thanks for posting this
    Baz uk

  176. Daphne Bull on November 23rd, 2014 16:41

    I also own a mazda RX8… ealier this week when I was driving I came to a stop light and my car shut off and started shaking horribly… now it wont start at all… any suggestions?

  177. Joseph Green on November 24th, 2014 03:50

    Your solution worked brilliantly. Thank you!

  178. Susan on January 3rd, 2015 02:01

    I didn’t use my RX8 for about two weeks and had this issue. I’ve had it happen before when using valet parking (they don’t listen to the instructions!) and have had to pay upwards of $800+ to get it fixed. This time my fab boyfriend found this blog and was able to follow your instructions to get it started. THANK YOU SO MUCH!!! From New Jersey, USA

  179. Tony on January 22nd, 2015 23:19

    I recently flooded my ’04.

    I hooked up my battery charger set at 10amps.

    I removed the fuel pump fuse and cranked the engine twelve times for 10 – 15 seconds waiting 3 – 5 minutes between cranks.

    I slowly depressed and released the throttle while cranking.

    I replaced the fuel pump fuse and volia – she started instantly as of nothing had ever happened!

  180. Sean on February 5th, 2015 21:49

    You are my hero, I did it tonight and it actually worked. Took me about 40 minutes though. One happy chap here :)

  181. Nathan on February 15th, 2015 19:59

    Just a note to say thanks for getting this info out there! Tried the other methods (accelerator pedal, fuse etc) with no luck, but after five attempts and only 10 mins the car was back and running!

  182. LANDRY MCDUFFIE on February 18th, 2015 00:32


  183. keith on March 8th, 2015 10:39

    de flooding remove fuel pump fuse and plugs , clean and place plugs between two hot water bottles while you turn engine over to clear fuel , replace fuse and plugs keep throttle on the floor and try again easing back slowly on the throttle this worked for me first time !

  184. jim in woodstock ontario,canada on March 29th, 2015 19:14

    awesome instructions..i bought this 2004 RX8 in December already flooded and never heard it was brought on a tilt and load..dropped..and left in the snow till today snow all gone.
    .popped out back seat as per instructions..4 screws and unclip the plug..turned it over a dozen times with 1/3 throttle..(audibly heard motor get compression)…put plug back on and fired right up in a cloud of stinky smoke..20 minits start to finish….thank you
    I did try the handbook method last December when car arrived but no go…

  185. spinage on March 29th, 2015 19:23

    Great to hear from you Jim, glad it helped!

  186. William grant on April 3rd, 2015 13:11

    I have a 2006 6 speed. Man I can’t wait to go home an try this now after reading. My wife crank ours while I was at work an didn’t tell me so I had no idea what happened an after taking tha plugs out an them flooded out an it still not cranking I was ready to sell it!! This is my last hope if it don’t work then u know where to come buy one. Lol were located in NC up in tha mountains. PLEASE let this work. Thanks.

  187. Tony on April 7th, 2015 02:46

    Hi, gonna try this but Rex been sitting for a year, is this safe? Thanks

  188. Tony Donovan on April 7th, 2015 16:45

    Trying this right now, my Rex been sitting for over a year, fingers crossed. X

  189. Chris on April 11th, 2015 21:20

    thank you for blogs like this a real life saver and worked perfectly!

  190. John on May 1st, 2015 18:08

    Fantastic instructions – did the silly thing 09 reg so thought the problem had been solved……wife moved car out of drive to get her car out……so next time I try to start it nothing!! Panic!!!

    Then I read about Mazda charging c£300 for a tow and flood solution, then I came upon this thread. Didn’t work the first time as I didn’t boost with jump leads, but when wifey came home put the jump leads from her car – gave it two 15 sec blasts with the pump unplugged, then within five secs with the plug back in cough splutter and it limped into life.

    Now going great – THANK YOU

  191. James on May 9th, 2015 06:47

    Love all the ideas on how to de-flood. Just wondering…what is the difference between pulling the fuel pump fuse and disconnecting the the fuel pump under the seat? Doesn’t this do the same thing? If not….which seat is the fuel disconnect under?

  192. spinage on May 9th, 2015 22:39

    No difference James, it’s just that the one under the seat can be reached while you crank the engine, giving you much finer control over when to connect/disconnect the fuel. In a right-hand drive model, it’s under the near-side rear seat.

  193. Colin on May 27th, 2015 04:17

    Spinage you are an absolute champion.
    my 04 RX8 has been sitting in my driveway for 3 weeks. after having a mobile mechanic look at it, I was told that it needed a engine rebuild. This would have been costly and he offered to take the car off my hands for $2000. I was mortified and some what reluctant but because he was my mechanic for the last 2 years I trusted what he was saying. The car would have been sold tonight so in one last stitch effort to get it going I read your blog and other people testimony, I figured I’ll give it a shot. And BAM WOW, it kicked over. I’m so relieved and can’t express enough gratitude.

    Thank you

  194. spinage on May 27th, 2015 07:58

    Hi Colin, that’s great to hear!

  195. MJ on June 11th, 2015 01:33

    Thanks Spinage for an excellent post with clear instructions.
    It tested my patience, but after an hour or so of following your procedure, she came back to life!
    Like so many before me, thank you for saving a fortune in towing and garage bills :)
    Thanks once again from a happy RX8 owner in Australia!

  196. Stu on June 12th, 2015 22:15

    Perfect way to solve this silly flooding issue.

    Two flooded rx8 s now all running due to your great work.

    Switches will be added to cut fuel in the week so I can control the fuel on what seems like a colder start or just easy to De flood.

    Thank you.

  197. Jon on June 16th, 2015 10:53

    I flooded my 8 for the first time having owned it for over 2 years, I tried the handbook method then the fuse method with no luck then fortunately came across this. It took 6 minutes start to finish with my 8 connected to a LR Discovery with jump leads to get her running. I’d flattened my battery and 2 jump units trying the first 2 methods.
    Thank you OP.

  198. Xanthum0 on June 23rd, 2015 21:18

    My 2004 Rx 8 is constantly having trouble with flooding. 104000 miles, but we’ll cared for. I was pondering placing a fuel pump shut off switch on center console and shut off fuel to kill engine to prevent flooding on next start…..Will it work or have I overlooked the obvious or perhaps throw trouble codes constantly….If you can think of any reason not to attempt this let me know; Orherwise, she will have a switch as soon as I get back into town.

  199. Manny on June 28th, 2015 14:35

    Thanks this helped, the garage told me it would take them 2 days to get to look at my car with a minimum charge of £70 just to look at it, found your page got car going in 15 mins

  200. Robert on September 16th, 2015 18:25

    Many thanks for this invaluable advice.

    Amazing result-had to turn engine with pump off for about a dozen times before any sign of ignition, then after a couple of times briefly re-connecting the pump, the engine almost caught. Then three or four more tries and the engine fired up. It has saved £50 towage costs and goodness knows how much more.

    I have cossetted my RX8 for ten years and have only flooded it once before and that was while it was in guarantee, so a Mazda guy came out and fixed it – I cannot believe that I did it again!! A very lucky outcome finding your blog.

  201. Seán on October 7th, 2015 17:37

    Waow … never seen as many positive comments! Well done Spinage!

    I’ve just had my 8 delivered back from the bodybody shop after quite a bit of work, looks amazing but won’t friggin start!

    The body shop left it on my drive, obviously started it, drove it off the lorry and parked on my drive and switched it off! …

    Just been looking all over YouTube for a fix, just about to try this now as I’ve tried everything else …

    I’ll report back on my success! :-)

  202. Seán on October 8th, 2015 16:56

    Me again … as promised and just to let you know that after trying everything else … this got me going in under 20 mins …

    Spinage, I wish you had a donate button

    Legend! … and thank you!

  203. Seán on October 12th, 2015 21:26

    Happy 5th Anniversary!!!

    Spinage & his RX-8 “deflood” post … saving us 8 owners for 5 years!!!

    12 Oct 2010 – 12 Oct 2015


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