Kaw FD620D cylinder imbalance

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Thread: Kaw FD620D cylinder imbalance

  1. #11
    Join Date
    Nov 2009
    Location
    Sugar Grove, IL
    Posts
    117
    Were compression tests done with both plugs removed? If the adjecent cylinder had the spark plug in, it will throw off the readings. If you had both plugs removed while testing the cylinders and only came up with @ a 2% difference in compression readings I wouldn't worry about it. Once you get more than 10% difference, it's time for a repair. Those are pretty good readings for a cold engine by the way.

  2. #12
    Join Date
    Oct 2008
    Location
    Thornton, CO
    Posts
    646
    Yes, both plugs removed.

    I thought that was good cold. Thanks for the confirmation. It's my understanding that cold readings are sort of worst case? (I'm no compression reading expert)

    And the fuel pump was unplugged. But that's really a story later when I couldn't for the life of me get the thing started.

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