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1998 GMC C3500 fuel pressure

Tiny
TTAMMY
  • MEMBER
  • 1998 GMC C3500
1998 GMC C3500 V8 Two Wheel Drive Automatic

first time using one of these get answer from the internet, so I have a 98 gmc C3500 5.7, need to know what the fuel pressur is to sovle my cranking issue. Making sure I have enough for the injectors to spray. Right now all the engine does is spinn over when I turn the key. Pour gas into the throttle body and it will run and I do have fuel pressure, thanks for the help, Tammy
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Tuesday, October 28th, 2008 AT 2:14 PM

1 Reply

Tiny
DLOBI
  • MEMBER
  • 125 POSTS
I believe the fuel pressure should be between 9 and 13 psi. You will need a pressure gauge to test this. There is also a volume test. If the volume is too low it might run but at higher engine speeds. You know for sure the fuel pump is good/working? They are known to go.
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Tuesday, October 28th, 2008 AT 2:20 PM

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