Pontiac Problems? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** I can help.
Have you tried swapping the spark plug wire? To see if the misfire moves to the other cylinder.
I'm think you got the cylinder to hot and now the one of the valves are bad.
If the misfire does not move with the wire. Need to do a compression test and a leak down test
If the wire does not help. Do this first
I think the exhaust or intake valve are not seating. Need to do a compression test and a leak down test.
May have to remove the head and have it recondition.
Did you need more help?
Let me know if I was helpful.