My engine seems to flood itself every time I start it. A few times it started right away after I cut off the fuel supply by pressing the accelerator pedal all the way down. LTFT is 7-13% at Idle, 6% during cruise.

Any solutions?

 

I've tried deflooding my engine. Seems to not be working. I've done exactly what the forums say but no good luck. Does the atmosphere temperature affect this procedure? I've only have got the opportunity to do it during the night.

 

My husband started her up and moved her out and of the way and then shut it off , then started it up hours later and moved it out of drive way and took foot of clutch while it was in gear, sure as **** it flooded.

I read that if you start it up let it warm up then drive it, but when you shut it off rev engine to 3K and shut it off while you still rev engine is this true? What is the start up procedure ?

 

^This.

 

Alright so I'm new to this, and I've had my rx8 for about 4 months now. Problems started up about the first month I had it. Car has 90k miles on it. It's an 04 AT. It had a jumpy idle every once in awhile, it sputtered at high rpm's, and it sometimes wouldn't start back up after filling up gas. I've noticed it takes awhile to accelerate and get up too speed sometimes also. I had a compression test done and the mechanic said it started up at 80psi then moved up to 120 gradually. I know I should have done it from a dealer but I've known the guy forever. I use 91 premium octane all the time. It starts great at cold temp but has trouble on hot starts after driving fun with it. The other day I was driving and it completely lost power on me, it literally felt like half the car was running. I didn't wanna hurt it anymore so I put it on a backroad then it got towed to my mechanic. Today he said he did another compression test for me and it came out to 0. Then he said there was oily sludge on one of the plugs. Any advice? Please!

 

Forgot to mention I did replace the coils, plugs and wires about two weeks ago.

 

is shooting sparks and flames out of the exhaust bad?

 

just bumping this silly thread from having stumbled across the 4-port engine picture that was posted in it a long time ago while doing a search …

 

I was driving my 8 pretty hard I went to make a turn and it shut off completely ever since I haven’t been able to start it since. I thought it might be flooded but on unsure if that’s what caused it to shut off. If I add starter fluid it starts but shuts off as soon as the pedal is pressed. Any help would be greatly appreciated.

 

I'd say fuel pump problem. Fuse, relay, pump fail. That's how we test @ shop with starter fluid shot.

 

Guys I need some advice

my Rx8 runs great starts cold or hot no problem as long as it’s not left alone for more than 12hrs.
If not started within that timeframe the engine will flood badly. I’ve been able to get it to start using deflood procedure and have removed leading plugs to let the fluid out… is a mix of oil and gas what pumps out.
all that being said I think something is getting stuck open, be it fuel injector or oil metering pump. A friend told me to check fuel pressure regulator.
any advice would be appreciated.
Thanks

 

Usually that's a sign of coolant seal failure, where coolant seeps into the chamber while the car sits, then clears out when you drive.
I'm not sure how you would check the fuel pressure regulator, it's integrated into the pump in the fuel tank.
If it's really fuel, it could be a leaky fuel injector, but I'm skeptical it would take 12 hours to leak enough to flood.

Are both rotors full of liquid when you check them? Just one? One injector can leak, or one coolant seal, but if both rotors are equally flooded, it might be something else.

 

I assume you waited 12hrs and then checked the sparkplugs to see what was coming out? Or are you failing to start it and THEN checking what comes out?

Generally after a flood you can know what fluid it is

• Coolant flood(blown coolant seals) will plume white thick smoke that burns your eyes and throat with a sweet coolant smell. Typically this would fill the street to the point you wouldnt see your neighbor's house. This would keep making smoke until the car is fully at temp and the heat helps things swell and seal more.
• Oil usually burns off as transparent blue smoke on startup
• Gas usually smells rich and would be grey/black smoke. Keep in mind that if you flood the engine with anything and keep failing to crank.....you are obviously going to be dumping gas the entire time now flooding you with gas as well. Usually gas flooding is from failing to start due to ignition or battery issues making you excessively crank dumping more and more fuel in until now its flooded with fuel. Failing compression would only cause cold start issues if you already experienced hot start issues for a long enough time to the point where comp is so bad your engine wont even idle hot.

1. Fill your coolant. Check your battery voltage. Run the car, check your voltage again, then wait 12 hours and come back. Check your battery voltage for losses. Then take out your leading spark plugs and hand crack the engine over to see if coolant comes out. If you see coolant this means it'll need a rebuild to replace the seals. Do not use stopleak or any of those products in these cars.
2. Then the next course of action is double checking your battery, starter, alternator. (My choice is the optima redtop, the premiergear 2.7hp starter on amazon, and whatever working alternator you are happy with)
3. Then the next course is ignition coils, wires, sparkplug related. (My choice is mazda RevC Rx8 coils FROM MAZDA, new wires, and then a new set of sparkplugs or cleaning your flooded ones if they are somewhat new.)

I doubt its fuel leaking from the injectors, usually that pressure bleeds off within 20 mins or so. Youd probably notice this if you had more starting issues after a gas station stop. Maybe test starting after an hour of sitting?
I doubt its oil giving longterm cold start issues, as there is no oil pressurized and possible to leak into the chamber after the engine stops spinning. Even the OMP injectors wouldnt be drooling oil longterm. Again if you can start after an hour I would rule this out and suggest going back to my previous 1,2,3 diagnosis suggestions.

 

[img alt="Just completed a home fuel injector test and they seem to be fine. Also changed coils, wires and plugs. It did smoke for a bit on initial startup but it started and ran well.
I appreciate all the advice. Let me try some of these tests and I’ll let you guys know.
BTW- when I removed the leading plugs to de-flood I did get fluid from both rotors. It was a gas/oil mix."]https://cimg3.ibsrv.net/gimg/www.rx8club.com-vbulletin/2000x1504/img_4398_9e5e3b77e263bba938c50d03182976a4db60fd12. jpeg[/img]
Just completed a home fuel injector test and they seem to be fine. Also changed coils, wires and plugs. It did smoke for a bit on initial startup but it started and ran well. I appreciate all the advice. Let me try some of these tests and I’ll let you guys know. BTW- when I removed the leading plugs to de-flood I did get fluid from both rotors. It was a gas/oil mix.