I have a 2001 GMC c1500 with a 4.3L. The engine run very rough on idle or not at all. I don't any sensor code but I do have misfire on all cylinder and it run rich on both bank. I change the the plugs, wires, cap and rotor ran fine for a month the problem came back, the plugs were very wet. Theres lot a gas in the oil. I change the EGR, looked at the IAC seem to work fine. The CTS and the MAP are OK. I don't know where is the fuel pressure regulator so I haven't look at it. The catalityc converters looks OK, but I don't know how much backpressure I should have. I did an injector balance test looks OK but my gauge was leaking so I need to do it again. Thanks!
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Saturday, February 11th, 2006 AT 7:35 AM