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  1. #1
    PWCToday Newbie
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    Gpr 1200 low compression after oil leak

    Hi guys,
    I need some advise on fixing low compression (about 90)on cylinder 1 and 3 after a oil leak fix on cylinder 3. It runs only 35 mph at high top.
    Where should I start here, I don't want to rebuild carbs if it's just lean issue.
    Thanks

  2. #2
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: Gpr 1200 low compression after oil leak

    90 is low but not terrible, maybe just a little damage. First thing I would do is pull the head off to have a look.
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  3. #3
    PWCToday.com Is My Home Away From Home
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    Re: Gpr 1200 low compression after oil leak

    98% chance that low compression on a two stroke oil injected engine after an oiling failure = internal engine damage (most likely damaged pistons). A carb fix isn't going to do anything for it.
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  4. #4
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    Re: Gpr 1200 low compression after oil leak

    90 weight gear oil should do it.
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  5. #5
    PWCToday Newbie
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    Re: Gpr 1200 low compression after oil leak

    I am thinking of pulling head but before I redid the compression test and noticed that the spark plug head color on the cylinder is not brown as it would be, this is the cylinder that I had fixed oil leak for popped up oil line. Here is pic of spark plugs20180713_210621.jpg
    Any idea why spark plug is light?
    Thanks

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