I have a 1996 Chevy S-10 with a 4.3L. The truck suddenly started running rough and backfiring with a P0300 troublecode. I have replaced the sparkplugs, plug wires, rotor, distributor cap, fuel filter, and camshaft position sensor. I also checked the fuel pressure at 55 psi. The coil checks out with ohm meter. No noticable vacuum leaks. It is still running the same. Suggestions?
Wednesday, August 10th, 2011 AT 10:52 PM