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  1. #1

    Temp loss of power?

    I have an ultra250x 08 with a newly rebuilt motor. Today was my 3rd time out since the rebuild and each time I started it when cold it didn't seem to have the proper throttle response until a couple mins of riding. I'm thinking I have a plug going bad. The only other thing is that when its not performing like usual I don't hear the supercharger whine like normal. Any ideas?

  2. #2
    nicjak's Avatar
    Join Date
    Mar 2008
    Warragul, Downunder
    spark plug

  3. #3
    S/C belt
    Hoses and Clamps

  4. #4
    I check the belt and its tight. Ill inspect further after the weekend

  5. #5
    One other thing I forgot to mention...max rpms r 7000 instead of 7800

  6. #6
    Ok I was wrong. Max rpms 7460. Changed plugs but they looked perfect. Hoses r tight. The only thing I found wrong was on 2 of the spark plugs, the tip was unscrewed a little. Going out tomoro for the last time of the year. Could it be not hitting 7800 bc of the breakin period?

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