MY FUEL PUMP DOES NOT RUN AND PRESSURIZE THE ...

2003 Chevrolet Silverado

Tiny

Anonymous

March, 27, 2013 AT 6:23 PM

My fuel pump does not run and pressurize the fuel rails when the ignition is placed in the run position. When started, it puts out 50psi and goes to 60 when the pressure regulator vacuum is disconnected. When the engine is shut off, pressure goes to zero. I am having intermittent hard starting. Why isn't the fuel pump pressurizing the rails with ignition in run, but works fine when the engine starts?

FOUND 947 RELATED QUESTIONS

1 Answer

Tiny

ASEMaster6371

March, 27, 2013 AT 6:32 PM

It takes time to pressure up as it runs for only 2 seconds.

It sounds like the pump check valve is bad.

Roy

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