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2000 GMC Jimmy Fuel won't get to the injectors.

Tiny
CURTISJ75
  • MEMBER
  • 2000 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 104,521 MILES
There has been a starting issue. It wouldn't start cold(after 8 hrs) - but would with a jump. Now it won't start at all. I put a new battery in - I can here the fuel pump whirr when the key is turned. After determining fuel is getting to the filter - I then got a used PCM to see if it's a "brain" problem. Since it still wouldn't start I removed the whole CSEFI unit where the air and fuel goes in. Well, upon removing the fuel lines from the fuel meter there was still fuel in the lines and fuel meter where the injector hoses connect to.

So how is it possible for it not to start? Is fuel just passing through and returning to the gas tank?
I don't have the knowlesge on how to test the various parts of the CSEFI meter body components like the fuel pressure regulator and such.
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Saturday, January 16th, 2010 AT 3:06 PM

1 Reply

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Fuel pump maybe coming on but the system require a high volume and pressure to operate
min 56PSI if less you would have fuel in the system but not enough to open and start the engine
I would check for fuel pressure using a fuel gauge
Dont have one most auto parts or rent place should have it for you to use
very common for the fuel pump module to fail
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Sunday, January 17th, 2010 AT 9:07 PM

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