Engine Mechanical problem
2002 Chevy Silverado 6 cyl Two Wheel Drive Automatic 95000 miles
I have a 2002 Silverado 4.3L 95000 miles thats not holding fuel pressure and I cant find why? I have replaced the filter, pump, regulator and injector o-rings. When I first turn the key the pressure shoots up to 60psi then as soon as the pump cuts off it falls to around 25psi and holds there. It will run if I crank it around 50psi but misfires and gives the P0300 reading. So what am I missing? I thought it was a bad fuel pressure regulator to start with but that didnt solve it.I even replaced it again. I plugged the return line and the pressure held around 55psi and it ran fine. What else could it be? Frustrated! Ugh! Lol thanks guys for your help
have the same problem?
Wednesday, July 21st, 2010 AT 8:13 AM