time for a shop to check it out?
96 caddy northstar. i pulled the motor and redid the headgaskets. i timeserted the block and torqued the heads right and the timing is set right also. i have a random miss at idle. comes and goes. it runs fine off idle. goes down the highway fine. the plugs are new but the wires are about 3 yrs old. yes, GM wires. i hate to replace the wires but this miss is annoying. can a pro shop tell me if the miss is ignition related or maybe fuel? i have checked the wires about a dozen times. no cross routing. any ideas?