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  1. #1

    please help problem with ultra 150

    i have a 99 utra 150
    Having a little promplems with it now. ful throttle i cant get up on plan it wont rev up. goes only like 30mph big speed loss. An it does not sound like ecu is putting it in reduction bec it dont sound like miss firing it just dont just rev up all the way.

  2. #2
    axgrider73's Avatar
    Join Date
    Feb 2007
    Southeast Ohio
    Welcome to thr Green Hulk!!

    What are the rpms maxing out at? Is it starving for fuel.

    Do a compression check and post the results. I would bet that you have lost a cylinder.

  3. #3
    check to see if all the spark plug wires r on the spark plugs

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