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  1. #1
    2000 Polaris Pro 1200 rdizz81's Avatar
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    What is the best way

    To tell if your ski is running rich or lean? and how to fix this?


  2. #2
    ryandi2's Avatar
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    Quote Originally Posted by rdizz81 View Post
    To tell if your ski is running rich or lean? and how to fix this?

    look at the piston wash..

    take the heads off and look.. post pics and we will tell you if it is or not..

    your motor uses o rings so just make sure they are ok and you can reuse them.. you will have to re cut or maybe get away with spraying gasket maker on the water bar gaskets

  3. #3
    2000 Polaris Pro 1200 rdizz81's Avatar
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    I cant just look at the spark plugs?

    i guess the title should have been what is the easiest way lol!

  4. #4
    ryandi2's Avatar
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    the "best" way is to look at the wash... you can get a small light and look or a bore scope..

    plugs are normaly only good after a wot run then kill the motor.. and look at plugs not idiling at all

  5. #5
    bowsniper's Avatar
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    lean pistons are all black. rich has big spots of the piston cleaned by the gas. a few fingernail size spots are what your looking for, not huge clean spots(rich). the only place on a spark plug you can accurately see what its telling you is the center electrode way down deep inside it. it should be orangish brown color indicates a good burn. The piston should have a chocolate brown color also..not burnt and black. too hot..

    Ryan was saying to do plugs and check the plugs.. thats going wot for a little bit and pulling the lanyard and hitting the stop button at the same time. this will show you what the plugs WERE doing at wot. not at an idle..

    look in the search function, it has lot of info on piston wash..

  6. #6
    ryandi2's Avatar
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    Quote Originally Posted by bowsniper View Post
    lean pistons are all black. rich has big spots of the piston cleaned by the gas. a few fingernail size spots are what your looking for, not huge clean spots(rich). the only place on a spark plug you can accurately see what its telling you is the center electrode way down deep inside it. it should be orangish brown color indicates a good burn. The piston should have a chocolate brown color also..not burnt and black. too hot..

    Ryan was saying to do plugs and check the plugs.. thats going wot for a little bit and pulling the lanyard and hitting the stop button at the same time. this will show you what the plugs WERE doing at wot. not at an idle..

    look in the search function, it has lot of info on piston wash..

    but all you are going to see when you look down the plug hole is black.. this is why you need a little light or bore scope.. the clean figner nail size spot should be on the intake side..

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Piston wash is BEST.

    Plug chops will only work after a WOT run like Ryandi said. I find that they don't always work. With some of the crap gas out now, you don't always get an accurate reading.

    Get a small flashlight that fits through the plug hole. (Home Depot has a nice Husky brand flexible light that works well for this $7) Turn your crank until the piston being viewed is at BDC. Then take a look at the dome using the light.

    TIP: it's hard to see down the plug hole with bright sunlight, so throw a towel over your head to make viewing wash easier.

  8. #8
    bowsniper's Avatar
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