Ive cleaned the carbs 2x, this a.m. I. The ultra sonic and carbs spray in every orifice....and that doesn't make sense because once it's above 3k or so rpm it still has the issue. If it was idle circuit I would t think it would not affect mid throttle, maybe off idle it would....and I just don't think it would bog down so bad if it was just idle circuit.
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Originally Posted by Triple Jim
This is carburetor related, not spark. The left carb's idle circuit is not supplying fuel, as demonstrated by the engine stalling when you unplugged the right coil. This could be dirt in the carb or just the idle speed set too low.
After you correct that, let us know if the stalling on quick throttle opening still happens.
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