Ok 4.2 remanufactured w/ howell fuel injection Hei dist w/adjustable vacuum advance. First off the motor has less than 6k on it and ive changed around 10 pcv valves I changed the motor because it had the same issue as this ones has (thought it was bad rings and new motor made sense) any help would be appreciated <img src="/forums/images/graemlins/confused.gif" alt="" />