hey im stuck i have a 96 s10 blazer and i developed an occasional miss that turned into an occasional misfire. i had the codes read and it said misfire on #1 ive changed the plugs,wires, cap and rotor. the problem got a lot worse. now it misses at idle and when i rev the motor it misfires. i traced the vacuum lines and they seem fine, well all the ones on the diagram under the hood anyway. it sounds like i may have a doughnut gasket leak would this cause my problem? i should mention that i have the 4.3 vortec v6. any and all advice is welcome......
also i should mention that i tried to unplug the vac. line where it runs to the rear of the vehicle while it was running and there was no change in the motor
Last edited by swartlkk; 04-16-2011 at 07:39 PM.
Reason: *Combining Consecutive Posts* - Please use the edit function to add additional information in your post if another member has yet to respond.