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Thread: running hot

  1. #1

    running hot

    2005 sea doo rxt is running hot and not sure why? Checked coolant and it is good any help?


  2. #2

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    is it losing coolant while riding?

  3. #3
    Ski Hacks MG's Avatar
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    Check thermostat.

  4. #4
    Yes, check thermostat, should open at 188F. Could be pump impeller. Air-lock? Have you changed or seriously topped up coolant recently? Leave coolant cap off and run whilst on trailer to purge any air out. (don't ride like this!!). Maybe it's a faulty temperature sender. These are a good starting points.

  5. #5
    Yes coolant is topped off and there isn't any leaking that I can tell.

  6. #6
    SplishSplash's Avatar
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    STOP, what makes you think it running hot? If your getting a Temp alarm, that the exhaust overheat, not the engine. Thus not the thermostat or anything like that
    Check your open loop for blockages.
    What makes you think it running hot?

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  8. #7
    So you think it is the exhaust is what your saying .

  9. #8
    SplishSplash's Avatar
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    Quote Originally Posted by robbie66 View Post
    So you think it is the exhaust is what your saying .
    Yes, what message are you getting that indicates something is hot?

  10. #9
    It just comes up on gauges and says hi temp

  11. #10
    SplishSplash's Avatar
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    Quote Originally Posted by robbie66 View Post
    It just comes up on gauges and says hi temp
    OK, that message is the EXHAUST is too hot, not the engine, so leave the closed cooling alone, its fine.
    You need to do a flush of the open loop cooling, flush the intercooler, exhaust manifold and all hoses and pipes associated with the open loop cooling.

    The exhaust sensor is down on the J pipe by the water box

    To flush it, connect a garden hose to the fitting on the the jet pump support , its threaded to accept a hose.
    Then in this order:
    1. start the engine
    2 start the hose
    3 observe that water is discharged out the jetpump and the Exhaust, you will have to look in the pump tunnel to see that water is coming out the exhaust
    4 Turn off the water
    5. Turn off the engine

    If water flowed out the exhaust while on the hose, its clear, if not, check for blockages.


    DO NOT RUN THE HOSE WITH THE ENGINE OFF!!!

    Good luck!

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