plumbbob

My car starts fine first thing. I drive for about 5 to 10 minutes shut it off wait a few minutes and it hard starts or not at all. Then I can get it started and it runs fine after that. I've thrown parts at it on both sides. Fuel and spark. I need options at this point. I've replaced cam, both crank sensors temp sensor checked coils injectors.

Impala-Blue-2.

Have you changed the EVAP (Canister) Purge Solenoid ? If bad, it will cause all the problems you are having.

tech2

stuck open purge would cause a hard start after refueling.

I would check for a fuel pressure leaking down. pull the vacuum line of the fpr and see if fuel is present.

plumbbob

Thank you, but we checked fuel pressure and replaced the fuel pump and the pressure does not leak down.Do you have other suggestions?

plumbbob

I've tried most of the things that seemed obvious and I'll give that a try thank you and I'll let you know

plumbbob

I put the new evap sensor on and that didn't change a thing. What else could it be that we haven't tried yet. It's funny that after the first hard start it acts fine.