Have a new JET Perf. Q-jet stage II 750. Don't appear to be any vac. leaks. & can't use a spacer because of the shaker. any other ideas? the factory setting on this engine was 16 BTC. 20 sounded kinda high to me also but figured I'd give it a shot. Do I need more gas? richen the carb? - When I floor it the engine starts to like sputter & "break up" from idle or any speed. & yes I am using the vac. adv.
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