I have a 94 4x4 1500. 190000 miles 12000 miles on a short block. The engine idle is not as smooth as it could be and while sitting in neutral reving the engine it shows no sign of problems. While driving the truck it fires back thru the intake then continues under steady driving to pop thru the intake. I have checked for leaks around the intake and all hoses. Have installed new plugs, cap and rotor. No codes show. Have capped off the egr valve to see if it was leaking. Left the control connected for the egr. The timing ihas been moved back and forth and still no change. Watched the injectors at idle, they have a fine mist. Snap the fuel open and the mist turns to a heavy spray. Have not checked fuel pressure for an adapter has to be made for this model.
have the same problem?
Sunday, November 25th, 2007 AT 6:06 PM