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  1. C

    High rpm sputter

    There isn't really a way to avoid ethanol in fuel though, is there? and if the carbs were cleaned recently, how could they get stuck that quickly? i can replace the spark plugs but wont they just foul up again?
  2. C

    High rpm sputter

    i have had the exact same issue with my 81 cb750k has about 7k miles. the previous owner said he rebuilt, synced and tuned the carbs, and it honestly ran great except for breaking up around 7K rpm. i found the boots from the filter to the carb were cracked and leaking so I replaced them. it ran...
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