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Thread: GP 1200 Issues

  1. #1

    GP 1200 Issues

    Hello all,

    I have just brought my first jet ski being a 99 gp1200. It has been sitting around for 2 years.
    Few questions.

    It does bog down when you nail it meaning carbie rebuild or just cleaning out of carbie is required?

    I have seen alot of stuff about blocking off the oil injection? I know why but really how offen do they fail (Oil Pumps). My setup completely stock with 96 hours on it.
    If i went pre mix how do you people go about mixing up 50 litres at one time?

    And is there any other issues that i should look out for in the future with this ski? (Only gets used for pulling skiers and some wave jumping)

    Thanks for your help.


  2. #2
    Flying Scotsman's Avatar
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    Pull your carbs and rebuild them post pics if there bad.
    My carbs get rebuilt every 2-3 years.

    Yours need rebuilt for sure.

    SCOTT......

  3. #3
    Thanks for that Scott. Will I damage the ski if i dont do the rebulids straight away?

  4. #4
    Flying Scotsman's Avatar
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    More than likely.

    Bad carbs kill motors......

  5. #5
    oldmanraider's Avatar
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    I'll second that, It's much cheaper to buy some carb rebuid kits than major engine parts.

  6. #6

    Oil Pump

    Thanks for that guys.

    So what about the oil pump business? Any ideas?

  7. #7
    oldmanraider's Avatar
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    If the oil pump fails when your out ridding your first indication will be engine failure. The block off kit is cheap and it's not hard to go premix. Just get one of those premix mesurment oil bottles that has marks on the side to show how much oil to add for the amount of gas you just added.

    I changed to premix several years ago just for piece of mind.

  8. #8
    cheatin' piston popper addicted's Avatar
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    ususlly the lines deteriorate or fall off long before the actual pump fails. the pump is just the scapegoat. If you block it off, you will need to carry a measuring cup and oil if you go on a long trip, if you keep it, you need to make it a habbit to inspect and replace the lines routinely.

    All boils down to personal preference.

  9. #9
    Thanks for that guys. So really if i keep a eye on the oil lines i should be ok? I might go pre mix just in case. Where would I get a block off kit in Australia?

  10. #10
    Old Ski Insanity w/rpm500's Avatar
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    Lots of riders from AUS. on GHPF... they can inform you of the best place to go locally ..rebuild those carbs .if your staying with the pump ... replace the lines now.( oil breaks em down afer a few year's)

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