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.

maxroach

iTrader: (12)

No codes or something?

Check your Coolant temp Sensor or wiring.

Snowwhiteevo

I will have to check the coolant sensor, but the car isn't showing a check engine I will have to check for codes manually.

darrell

iTrader: (1)

Crank sensors it sounds like did you try that

Snowwhiteevo

I haven't tried crank sensor yet since it's in such an awkward place

Snowwhiteevo

I was just trying to rule out all easy fixes first.

barneyb

When it won't start try thumping the fuel tank under the electric fuel pump.

moyassine

had the same problem with evo once, took us a long time. it was my aftermarket fpr leaking, and my injectors were leaking also. good luck.

Snowwhiteevo

thank you guys I'll try this tomorrow

Snowwhiteevo

What would this mean it is?

barneyb

If it starts after thumping there's a bad spot on the fuel pump commutator or the brushes are shot - anyway, not making contact. In other words, you need a fuel pump.

Snowwhiteevo

How would I go about thumping if from
underneth the car or pull the fuel pump out?

4b11slayer

You can do a fuel pressure test to veirfy fuel pump is at fault.

Snowwhiteevo

Wouldn't you guys think it might be a electrical because it only happens when the car is warm?

4b11slayer

Yes a fuel pump is (electric)