Originally Posted by EdandStacy
I thought I could hear it running after it stalled out. We'll have to check that out. What is the best way to test it? Could it be a pump relay?
If you hear the fuel pump running, then there is nothing wrong with fuel pump relay.
There should be a Scrader valve on the fuel rail for pressure testing. TBI = 9-13 PSI, MFI = 45-55 PSI.
It may be flooding out due to inoperative IAC or its ancillary place equipment.
Does the engine fast idle when cold?
Does the rpm remain the same when A/C or Defrost is selected?
Does the rpm remain the same when a gear is selected?
Same with headlights turned on.
If the IAC isn't working, or its ports in the plate are carboned up, the engine will run rich. The Idle Air Control is a controlled vacuum leak on this is how engine idle rpm is set. The engine must fast idle. If it doesn't, remove a spark plug and check for wet electrodes.
Don't be afraid to hold throttle plates open when starting, same method used in starting a flooded carbureted engine can be applied to a flooded EFI engine.