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low rpms

  1. Bike Runs great then bogs down from time to time

    Honda
    I have a 89 cbr 600 that was running great until a couple days ago....It starts up fine and the RPMs are solid but then out on the road it just boggs down, the pitch of the exhaust gets lower and i can barely drive anymore. I already replaced the spark plugs and it only bogs down sometimes...
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