Stalled and won't start back up.

[boomer3]

Hey guys. I started my gtr up this morning. It was about -15, so not even close to the worst i've driven it in. I started reversing and stalled (this multiplate clutch is a bugger). Then she wouldn't start back up!
It has an aftermarket ecu, and I think it dumps a pile of fuel in on cold start, i think maybe even more than stock. So i'm thinking maybe its flooded???
When I got back home I tried starting it with the throttle wide open, closed, and also took out the fuel pump relay and cranked it for a while in each case. The outcome doesnt seem much different regardless of what I do. I can get it to hickup and combust a little, but not enough to start up. I smelled the exhaust a few times after cranking and it smells like gas.
The fuel pump is definately working (can hear it at least), it couldn't be coils as they can't all go at once (although i suspect they are getting old). I'm not sure what to think. Simple case of being flooded? Maybe I need to check the main 75A fuse... This doesn't make tons of sense to me. It should at least idle a bit. I've turned it over so so so many times with the throttle wide open / fuel pump relay out, could it still be flooded?

[NismoS-tune]

If it's an R33, you may have flooded your engine or fouled your plugs

I wouldn't bother checking the 75 amp fuse since your engine still turns over. Think simple first, flooded and fouled plugs.

[Nismo_line]

it was colder then -15 today its like -35 with the windchill unno if that would still make a difference

[GTRADDICT]

[QUOTE=NismoS-tune;440946]If it's an R33, you may have flooded your engine or fouled your plugs


+1 take out your plugs and heat them up with a propane torch then try it again.
I don't think the full throttle trick works on TPS cars. Not 100% sure on this though...

[boomer3]

I have a feeling you're right. PS it's an R32, but I still think it's probably flooded to the max. I was crossing my fingers with the open throttle, but it must not work for tps cars as you say. I still though turning it over with the fuel pump fuse out would possibly dump the fuel out.... Time to pull out the plugs.

[NismoS-tune]

I'd just clean the plugs, that's all I ever did when this happened. If they were bad, I replaced them. I've never tried torching though.

[Skym]

When coolant temp is below 0 degrees, ECU injects alot of fuel. Warming engine up with a engine warmer can help.

Using throttle works, as opens throttle plate on throttle body more and allows more air into engine over what idle valves provide. TPS is used for transient throttle enrichment, similar to accelerator pump on carb engine that does a similar job.

Also check ignition module, as it's known to playup, especially if plastic is cracked. Usually plays up when it overheats.

[NismoS-tune]

What?!?!1

what happened to "KISS" methods lol. I think he just stalled it with the beast clutch and the plugs are fouled lol.

When coolant temp is below 0 degrees, ECU injects alot of fuel. Warming engine up with a engine warmer can help.

Using throttle works, as opens throttle plate on throttle body more and allows more air into engine over what idle valves provide. TPS is used for transient throttle enrichment, similar to accelerator pump on carb engine that does a similar job.

Also check ignition module, as it's known to playup, especially if plastic is cracked. Usually plays up when it overheats.

[boomer3]

Hah, yep 'kiss' methods are where I started. I went an even lazy-er route and got somebody to pull my car. I turned the ignition on, stuck it in second, and forced her to start up! It ended up working, but it ran terribly until fully warmed up 20 mins later. Sputtering, missing, seeming like its driving on less cylinders etc. I'll bet you some culprit coils decided to act up badly for the first time today, and happened coincidentally with flooding, making it that much harder to start...
It has sputtered/missed a small amount at idle even when completely warm since I got it, but never this severely. Would you guys agree that this is probably whats going on here?

[DarkCaporaL]

I'd still say plugs. You probably ran on 4-5 cylinders for that 20 minutes because not all the plugs fired back up when you push-started it.

Just take your plugs out takes 5 minutes.

Then if it still sputters start looking at the coils.

[Bossman]

I have a feeling you're right. PS it's an R32, but I still think it's probably flooded to the max. I was crossing my fingers with the open throttle, but it must not work for tps cars as you say. I still though turning it over with the fuel pump fuse out would possibly dump the fuel out.... Time to pull out the plugs.

It does sounds like you have flooded the engine. Pull the plugs and make sure they are clean them first, the plug's tips are probably all wet and full of carbon by now. Put the fuel pump fuse back in because you need fuel to start the car and keep it running once all the excess fuel is blown out. If your engine is flooded you should start the car with open throttle, keep cranking and once the engine starts running then take your foot right off. Your were almost there when it was sputtering as this is a sigh of the cylinders clearing, you should have kept cranking with the foot down.

[gtrjon]

dude just check the plugs it will take you 10 minutes and you will know alot more once you look at them. You pull them out clean them and still same problem your probably right with coils but you wont know til you check the plugs

[boomer3]

Like I said, I got it running. Once it warmed up it was running on all 6. It took quite some time to get there though, so it is most likely bad coils. I'm suprised I didn't wreck my starter, I had tried starting it for over 30 mins with wide open throttle, with a booster car hooked up. Even with sputtering every 5 to 10 seconds it simply wouldnt go. That's when I resorted to towing it in second to clear out the engine. Had there not been a car available I would have taken the plugs out. They are brand new so I knew they weren't on their way out, just wet.