Engine Performance problem
2000 Chevy Silverado V8 Four Wheel Drive Automatic 160000 miles
My 2000 Silverado 1500, 4x4, 5.3 L, has an engine miss. It miss fires upon acceleration. The "check engine soon" light is on at all times. When the engine is cold it starts easily, when it's hot it starts hard. I have replaced plugs and wires and put in a new air filter. I have checked the PCV valve and it was fine. Upon inspection of vacuum lines, I noticed gas coming from the vacuum port on the fuel regulator. When probing the EGR valve, I had an open circuit in the valve position sensor. I don't know if this trips the "check engine soon" light or if this is causing my performance problem. I also have a plug that keeps fouling on the #4 cylinder. I have switched the coils around to check it and it continues to foul. I appreciate any help that you can give me.
have the same problem?
Wednesday, June 9th, 2010 AT 10:47 PM