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  1. #1

    Neeed help quick yamaha 1200

    I sold my ski and the guy is coming to pick it up tomorrow.
    I changed one cylinder cinlinder is fine good compression I mixed 50 to 1 with a full tank for the new cylinder but I'm having problems fouling plugs in that cylinder. took the ski out runs about 35mph then all the sudden it get up to 50mph with more to go, then after a turn it or let off the throttle it would go 35mph again for 2 or 3 minutes then it would go 50 again. if I change the spark plug in the first cylinder it will go 50mph right out of the gate then 35 again. I rebuilt the carb today. just can't figure it out please help!!!

  2. #2
    WATER WOODY's Avatar
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    Aug 2005
    Minden, Nevada, United States
    check you pm

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