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  1. #1
    Goliath's Avatar
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    Cooling System check

    Sorry for all the questions but how do you check to see if all your waterlines are clear and where do you start?
    Last edited by Goliath; 07-05-2008 at 11:33 PM.


  2. #2
    Goliath's Avatar
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    Oh and do you think that sucking up sea grass could have gotten into the cooling system and clogged something? Or would it just go right through the impeller?
    Last edited by Goliath; 07-05-2008 at 10:59 PM.

  3. #3
    Goliath's Avatar
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    Anyone?

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Goliath View Post
    ...how do you check to see if all your waterlines are clear and where do you start?
    Usually, you just reverse flush the cooling system through the water bar flush fitting.

    Then monitor the engine cylinders for excess heat while riding. If all the cylinders are about the same warmth, and you can hold you hand on each one for several seconds, then the cooling system is probably OK.

    Same for the exhaust system. You can unscrew the exhaust water spray fitting in the exhaust system, and check that it is clear.

    Quote Originally Posted by Goliath View Post
    Oh and do you think that sucking up sea grass could have gotten into the cooling system and clogged something?
    Or would it just go right through the impeller?
    The impeller pressurizes the water jet inside the exit nozzle. The cooling water feed comes off the side of the jet pump exit nozzle, through a small black plastic mesh grate (about an inch square).

    You can see it when you look into the end of the pump nozzle, just inside where the water tube connects to the nozzle.

    Check that your cooling water intake grate is not clogged. Usually the reverse flushing will also clear the intake mesh, but if it is badly clogged, you will need to remove the jet pump nozzle, and clean it that way.

  5. #5
    Goliath's Avatar
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    Quote Originally Posted by K447 View Post
    Check that your cooling water intake grate is not clogged. Usually the reverse flushing will also clear the intake mesh, but if it is badly clogged, you will need to remove the jet pump nozzle, and clean it that way.
    It's clear. I was just thinking that maybe it was the cause of all my problems!

  6. #6
    After opening my Sl650 crankcase, i had alot of little rocks, a few leaves, and some random grit in the water passages.

    Yours could be slightly plugged, but thats a REAL big hassle to clear out manually, maybe hook up a super high flow high pressure hose to the thing to clear it?

  7. #7
    seaobin's Avatar
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    too high a pressure will blow back into the exhaust ports

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