Quote:
Originally Posted by SPRBLKXX
i have a cobra 351 windsor and have a issue when heavy accel starts popping then takes off hard, ive rebuilt carb, test msd dist, replaced coil, adjusted valves, ck timing, holley carb been gone thru. what else help.
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Some more info about the engine would be helpful, compression, cam timing etc and what carb you're running.
"carb been gone through"? Was it running ok before?
Continous popping? or backfire through the intake on hard acceleration?
Either way the engine's not liking the momentary incorrect A/F ratio, accelerator pump volume correct and duration too long or short (pump nozzle) or volume incorrect (pump cam).
Double pumper, vac sec?