Originally Posted by 4b11slayer

Yes a fuel pump is (electric)

Originally Posted by 4b11slayer

For now your gonna be throwing parts at it. You need to narrow it down to whats going on during the no start. I.e no spark,no/low fuel pressure

Originally Posted by slocho

what he says^
buy a spark tester, they are only a few bucks and the local parts store and google how to use it, its really easy. If you have spark you can eliminate any ignition related stuff like cam/crank sensors (those both have to send a signal to the ecu for the ecu to send ignition signal to coils)
if you have spark next is fuel pressure. It is very possible for a fuel pump to get warm and loose some sort of connection electrically. Some parts store will rent one to you, just make sure you have the right adaptors. Hope that helps!

Originally Posted by slocho

what he says^
buy a spark tester, they are only a few bucks and the local parts store and google how to use it, its really easy. If you have spark you can eliminate any ignition related stuff like cam/crank sensors (those both have to send a signal to the ecu for the ecu to send ignition signal to coils)
if you have spark next is fuel pressure. It is very possible for a fuel pump to get warm and loose some sort of connection electrically. Some parts store will rent one to you, just make sure you have the right adaptors. Hope that helps!

Originally Posted by Thoe99

Sounds like you need to replace the ignition switch. I had the same problem before and this solved it, very common issue.

https://www.evolutionm.net/forums/ev...ied-fixed.html

Originally Posted by Snowwhiteevo

What would this mean it is?

Originally Posted by Snowwhiteevo

So as you see the car wont start when warmed up. The car has no issue when it is cold starting. Yesterday when I was driving to work the car started acting weird then the RPMs were jumping and heard two backfires from the exhaust, so I pushed in the clutch then the car died and would not start again. I had to have the car towed home and when I got home of course it started straight up. I have already tried swapping out the map sensor with another friends 4 bar same brand and nothing. I have also read on here that someone else was having the same issue with theirs and they replaced the cam position sensor, so we also tried this and nothing car still wouldn't start when warm. I messaged my tuner and he said it sounds like a leaky injector, but idk if this would be the case as the injectors are less than a year old but who knows. I am on speed density and on E85 if this helps. Stock ECU. any help would be gladly appreciated.

Originally Posted by Rom

Petty common that this is either crank position or camshaft position sensor. I had it on my Porsche - exact same symptoms. I also saw an Evo thread where it was the camshaft sensor.

Thanks!

S.

Originally Posted by mines5

Did you just recently downloaded V7 and flashed it. All this started happening after that ?

Which injectors are you using ?

Originally Posted by Snowwhiteevo

I've check the spark when the car does not want to start it does spark. And also I am running 2150s the car has been running fine on this fine for 5 months now With no issues prior to this.

Originally Posted by slocho

with good fuel pressure and good spark, its most likley not opening injectors. I cant imagine your car loosing that much compresson only when warm, or loosing compression at all. With good compression, fuel, and the right timing it has to start, being that it starts when cold my guess is timing is correct. I dont know much about tuning but it sounds like something electrical causing the injectors not to be fired off.
have you tried squirting some brake clean in a vacuum port while cranking? Its not a very recommended test but if your car is not getting fuel, itll run with break cleaner as a fuel source. Ive done it before but only for a few seconds to confirm it runs.