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  1. #1

    1999 Yamaha 1200XL ltd Factory Compression when new?

    What is the compression on a new factory engine for a 1999 1200xl ltd?

    And how close should my reading be to this original number? 80%?

  2. #2

    Join Date
    Dec 2007
    US of A
    Compression was around 120psi new, when you check compression you want all cyl to be within 10% of each other. Also remember to disconnect the pv connector when you check compression.

  3. #3
    How do you disconnect the pv. I am so confused on the pv and where it is and how it works.

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