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  1. #1

    Join Date
    Jan 2008
    Dallas Area

    Compression Check on a GP800R

    Hello All! I'm a newbie to this forum and just looking for some information.

    I need to check the compression on a GP800R. On my Kawasaki, there are ground connectors to plug the spark plug wires onto when cranking the engine with the plugs out. The Yamaha doesn't have anything like that. Is it necessary to ground the plug wires on the Yamaha when cranking the engine?

    Also, what compression should I expect to see? ~120psi?

    Last edited by Ski Monkey; 01-24-2008 at 11:01 AM. Reason: corrected typos

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