Mechanics

CHEVROLET CORSICA GAS PROBLEM

1991 Chevrolet Corsica • 149,000 miles

3.1 V6 MPI
Car tries to start. Cranks, fires about 2 seconds, then dies. I have installed a new pump w/strainer in tank, new MAP sensor, new IAC valve, new oil pressure switch, new oil filter, new oil, new fuel filter and fresh gasoline. Gas cap vents fine. Fuel Pressure at Schrader valve on rail shows 42 psi (pump on). Pressure will drop (pump off) to 20 psi after minutes. No noticable fuel in vacuum connection at pressure regulator.
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Guest
March 16, 2013.




If you remove the hose from the regulator, does fuel shoot out?

Roy

ASEMaster6371
Mar 16, 2013.


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