1998 GMC C3500 fuel pressure

1998 GMC C3500
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TTAMMY
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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
Oct 28, 2008 at 2:14 PM
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DLOBI
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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.
Oct 28, 2008 at 2:20 PM