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750f idle knock carb sync

  1. J

    Idle knock, backfires

    Hey guys, I just picked up and 81 750f and I am having some running issues. I have a knock from the lower left of the crankcase at idle but goes away completely after 1500-2000 rpm, also my #1 exhaust pipe is getting heat coloring and I'm getting an exhaust backfire from either #3 or #4. There...
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