SHOULD I HEAR THE FUEL PUMP RUNNING A BIT ?

1996 Chevrolet Blazer

Tiny

jeff haas

July, 10, 2012 AT 9:24 PM

I have a 1996 chevy blazer I have to turn key on for a few seconds then crank over been starting fine until yesterday an today any ideas?

FOUND 10189 RELATED QUESTIONS

9 Answers

Tiny

saturntech9

July, 10, 2012 AT 9:28 PM

The fuel pump will run for a couple of seconds with the key in the run position then it will run constantly while cranking the engine.

Tiny

jeff haas

July, 10, 2012 AT 9:36 PM

I could not get it start at work then it fired up drove home started several more times jus fine is it loosing tis prime maybe?

Tiny

saturntech9

July, 10, 2012 AT 9:43 PM

Could be you can rent a fuel pressure gauge from auto zone and see if the pressure is bleeding down. Hook up the gauge start it up and then turn off the engine and watch the gauge and see if the pressure bleeds down if so to what pressure it bleeds down too?Monitor the pressure for 5 mins for dropping.

Tiny

rasmataz

July, 10, 2012 AT 9:47 PM

Fuel pressure specs below:

Tiny

jeff haas

July, 10, 2012 AT 9:48 PM

From what said already do you think the pump is ok?

Tiny

ASEMaster6371

July, 10, 2012 AT 9:50 PM

What is the pressure?

Roy

Tiny

jeff haas

July, 10, 2012 AT 9:54 PM

I will get back to you later with the specs.

Tiny

saturntech9

July, 10, 2012 AT 10:47 PM

Also what it starts at and what it drops to in 5 mins.

Tiny

rasmataz

July, 10, 2012 AT 10:58 PM

The fuel pump relay powers it for a few secs to prime the system once the engine starts up the fuel/oil pressure sending unit takes over the power

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