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    GP1200R Compression

    I just did a compression test on my 2000 GP1200R

    All 3 are coming in at 115psi is this correct? I thought its supose to be around the 130 mark. If its not any clue what the cause can be?


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    Hydrotherapy's Avatar
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    Quote Originally Posted by angelico View Post
    I just did a compression test on my 2000 GP1200R

    All 3 are coming in at 115psi is this correct? I thought its supose to be around the 130 mark. If its not any clue what the cause can be?
    sounds pretty good to me my buds gpr 2000 with 110 hours comes in at 118 p.s.i warm engine and WOT

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    this was a cold engine test and only 50 hrs on the unit

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    Hydrotherapy's Avatar
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    i would still say thats dam good,if not another will chime in to correct me.

    was it wide open throttle???

    dont forget all gauges are out a small ammount even snap on after a while.

    are you trying to locate a problem or was this just for refrence to your ski and its condition.

  5. #5
    No i just wanted to test it before I listed it for sale, dont want a new buyer to have any problems what so ever

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    YamaBoy! tmetz's Avatar
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    I have 160 hours on mine, and i have a compression of 115 on all 3.

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    Moderator RX951's Avatar
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    Quote Originally Posted by angelico View Post
    I just did a compression test on my 2000 GP1200R

    All 3 are coming in at 115psi is this correct? I thought its supose to be around the 130 mark. If its not any clue what the cause can be?
    thats right on PAR

    * try to always do a compression check every 10 hours or so to keep an eye on your motors health. an aftermarket RPM guage also is a good tool.

    Make sure you take compression readings with the motor in the same condition every time. If you took them hot, alwasy take them hot. If you take them cold, alwasy take them cold. Just be consistent.

    Is your motor premix or still has oil injection? With your ski being a 2000 model, I would have some concern about the oil injection line becoming brittle and weak. A good indication of when they break or pull off of the quills is you'll see a bunch of oil in the hull. Not trying to scare ya, but something to keep a watch for "if" you do still have oil injection.

    With a ski that old and that many hours, I would look into going pre-mix.

    Is this ski all stock ?

    here is a good thread over compression
    http://www.greenhulk.net/forums/show...ession+testing


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