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  1. #1

    gp 1300r pwervalve problem

    hi everyone i have an 03 gp1300r just started rebuilding motor i put new r&d powervalves in and one is hanging up it gets caught on something in the cylinder when its all the way down and jams up not all the time just once in a while the motor is still on the bench i am turning it by hand i dont see what its hanging up on just got cylinders back from millenium so its clean just wondering if any one else has had this problem thank you any info would be appreciated


  2. #2

    Join Date
    Mar 2013
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    it could be hitting the piston be careful i would take it back out and inspect it before i did anything especially if you just got them done at the machine shop

  3. #3
    not hitting piston its getting jammed where it slides

  4. #4

    Join Date
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    take it out and look for any gumming or spray some wd-40 or something inside their to clean it up

  5. #5
    mudslanger's Avatar
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    Jul 2010
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    Huntsville Al
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    The problem is when you tighten the retaining screw down it puts the brass collar in a bind if you loosen the screw the valve will free up. the last cylinders i sent millennium i told them not to do any cleaning to the power-valve openings. because if they hit the bottom of the seat were the power valve bushing rest it can cause one side of the seat to be lower than the other and will cause the bushing to bing on the power valve shaft and is a pain to repair.

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