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  1. R

    93 Yamaha 40Hp Jetpump

    The motor starts everytime and runs great at full speed for about 3 minutes then it starts to miss. It can be brought back to an idle and is great, but anything over 1/2 speed after it is warm causes it to miss. The carb are clean, new fuel pump, gas does not seem to be the issue, new water pump...
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