1972 GMC C2500 Repair Question
Asked on November 21, 2007
3/4 ton pickup
I have a 1972 gmc3/4 ton longhorn pickup that just drinks gas. the carb is set to specs the timing is on however it constantally pings it is a 350 eng with a 350 trans can you help it is also a 4 barrel carb and i dont drive it hard
Asked by wrayraeAnswer
Replied on November 23, 2007
Are you overheating? Find the EGR take it out and clean it and make sure its. Inoperative EGR will cause your engine to detonate/ping.
If it has a knock sensor check that out too.
