Mechanics

GMC SONOMA FUEL PRESSURE PROBLEM

1999 GMC Sonoma

1999 GMC Sonoma 6 cyl Two Wheel Drive Automatic 105000 miles

if I poor some fuel in to the throttlre body my truck will start and run fine if I do not do this my truck will not start what could be the problem
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Jerseyboi0831
September 18, 2010.



Are you saying, once you prime it, the vehicle runs fine the rest of the day? Do you have the spider fuel system? Check fuel pressure 60--66 psi key on engine off. Some of the national brand autostores used to loan out a fuel pressure gage, if you don't have one.

JDL
Sep 18, 2010.