SBT Jetski Engines, Parts & Accessories

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  1. #1
    Joined
    Jun 2005
    From
    Denham Springs, LA
    Posts
    7

    Question 1996 Kawasaki Sts 750 Overheating

    I bought it used, had a couple of minor problems initially which have been fixed.
    OK, I've only taken it out twice since I got it. The first time it ran great but right away I noticed that the water coming out of the cooling system tateltail on the front was very hot and not a steady stream. After about 5 minutes the ski shut down on what must be high temp. When I got it home I flushed it and had a good stream of water coming out what is normally the intake fitting in the jet nozzle area. Still not a steady stream out of the tateltail, but it's cooler water with the ski running for about 5 - 10 minutes at idle. So I pulled the temp sensor that is in line before the tataltail, it had some mineral deposits built up on it. I changed the temp sensor and went back to the river, same thing happened! So this time when I got it home I started taking the muffler and exhaust system apart blowing through with air to check for blockages, none found. I have not taken the exhaust manifold off yet. I do see mineral deposits in the water part of the heat exchanger/exhaust, but it does not look that terrible. Could the mineral deposits be resricting the water flow enough to cause the overheating? If so, how do I clean it out??

  2. #2
    Joined
    Jun 2018
    From
    Reisterstown Md
    Posts
    94

    Default Re: 1996 Kawasaki Sts 750 Overheating

    1996 Kawasaki sts 750. split hose from water box to rear end of blue exhaust pipe. pisser had good flow on river. was heating up couldn't touch water box. short fat hose split. i had water flow to exhaust manifold and block although very hot pistons didn't seize up. It smoked and limped back to the ramp. questions 1. can I drill holes in gasket at exhaust manifold to allow more water into exhaust system jacket. 2. Can cavitation cause the jet pump to not suck in cooling water? 3.other than making sure all intake cooling water hoses are clear how can I test to make sure im getting enough water to cool my exhaust flow? 4. do i need to prime all hoses with water.5. Is there a free pdf for a supplement that describes water flow and proper hose routing. There was one for my 1994 seadoo xp. 6. what am I doing wrong or missing. ? please advise? Maybe I hooked the hoses back up incorrectly?

    Sent from my SM-J700T1 using Tapatalk

  3. #3
    Joined
    Jun 2018
    From
    Reisterstown Md
    Posts
    94

    Default Re: 1996 Kawasaki Sts 750 Overheating

    Correction Short hose may have gone to aluminum pipe that has smaller diameter hose going to blue heat exchanger. im sorry if my descriptions are incorrect. its later so I cannot go look at it. and I have to work all day tomorrow and wanted to get these questions out there for some help?

    Sent from my SM-J700T1 using Tapatalk

  4. #4
    Joined
    Jun 2018
    From
    Reisterstown Md
    Posts
    94

    Default Re: 1996 Kawasaki Sts 750 Overheating

    Sorry I added to your post. Did you find any restrictions or clogs anywhere. Im thinking jet pump cavitation. maybe thats why no overheating on the hose. Could be the jet pumps not pulling enough cooling water.

    Sent from my SM-J700T1 using Tapatalk

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