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  1. #1

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    closing power valves

    Hi All, 99 xl 1200 xlt if you haven't heard already . I see in order to get a proper compression test the power valves should be closed. Anyone know how I accomplish this? Thanks


  2. #2
    100 MILES OF HEAVEN AND I AM SMACK IN THE MIDDLE KEYZBUM's Avatar
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    Apr 2007
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    power valves are closed till around 4500 rpm then they open or pull up the valve ...
    pull all the plugs and hold the throttle wide open to get your best compression numbers-
    get some comp. numbers and post back
    mattman

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