Engine Performance problem
1996 Chevy Truck 6 cyl Two Wheel Drive Automatic
I have a 96 chevy 1500 with a 4.6 L Vortec engine, engine runs rough with lots of black smoke. I replaced the fuel pressure regulator, mass air flow sensor, map sensor and engine coolant temperature sensor and still t am getting the same results and a dtc p0300. When I replaced the regulator I thought I hit the problem on the head because I saw where fuel had around the regulator clean and shinny but I got the same results when I ran the engine again. Sometimes it will ran fine at times when the engine is warm but when it is cold and has been sitting for awhile it runs terrible. I suspect the spider assembly is at fault, what do you think?
Saturday, November 14th, 2009 AT 7:09 PM