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.

 

No codes or something?

Check your Coolant temp Sensor or wiring.

 

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.

 

Crank sensors it sounds like did you try that

 

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

 

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

 

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

 

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.

 

thank you guys I'll try this tomorrow

 

What would this mean it is?

 

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.

 

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

 

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

 

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

 

Yes a fuel pump is (electric)