Need help with long crank to start after driving and parking

[andrewwynn]

The symptom says fuel pressure not staying. Usually if the check valve in the pump failed.

[plasstik]

Originally Posted by andrewwynn

The symptom says fuel pressure not staying. Usually if the check valve in the pump failed.

Fuel tank was clean as well as the old filter on the fuel pump.

[andrewwynn]

Originally Posted by plasstik

Fuel tank was clean as well as the old filter on the fuel pump.

Unrelated to pressure. Only outlet check valve on pump and FPR affect holding pressure and pump winding and age affect running pressure.

I6 will prime pump before crank. V8 with starting assist where it keeps cranking after you let go of key doesn't turn on the pump until you turn the key so it's more susceptible to problems with FPR: check valve failure.