Still having a problem w/ the Mach 1:
Problem: A "popping" noise/small backfire from the carb when the throttle is opened quickly and only quickly. If it is opened slowly the engine will spool up just fine and everything sounds great. The popping happens more easily when the engine is under load. For audio/visual reference please watch this clip:
YouTube - Mach 1 First Run 4 08 09
Car is question:
1973 Mach 1
4160 600cfm Holley
I would really like to get this car to the big show at the University of Maryland (April 26). I'm thinking a valve or timing chain problem off hand?? Please help!! Thank you!!