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  1. #1

    ultra 150 over heat engine

    last week ski was running amazing untill we ran out of fuel and had to put it on reserve. today we headed out and we are getting over heating it was just running weird bit of vibration but if you hold the throttle there it will kick in eventually. i noticed alot of steam coming out the arse end also. there was no water coming out of pisser at front on idle or cruze but does shoot some out when you get up to speed. i got it home and hooked it up to the hose and waters coming out the front pisser and the 3 on the right at the back so any ideas??? will this be a not getting the water pumped in issue if so how to fix. ive only fiddled around with the ski a wee bit so dumbed down info would be great thanks. please help want to be back out in 2days winter is fast approaching


  2. #2
    steve45's Avatar
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    Sounds like you've got trash in it. Remove the elbow fitting from the heads and see if they're plugged. Happens pretty often. Remove the inlet hose and blow it out. Consider putting in a water strainer and the triple pisser kit.

    Do NOT continue to run it until you find the problem.

  3. #3
    Quote Originally Posted by steve45 View Post
    Sounds like you've got trash in it. Remove the elbow fitting from the heads and see if they're plugged. Happens pretty often. Remove the inlet hose and blow it out. Consider putting in a water strainer and the triple pisser kit.

    Do NOT continue to run it until you find the problem.

    thanks where does strainer usualy go and is there a kit for that also??? i have triple pisser on order thanks

  4. #4
    steve45's Avatar
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    The strainer goes in the line between the pump and the engine. You have to be creative in mounting it, and you'll probably need a couple feet of 1/2" rubber hose.

    Groco makes a decent strainer, some of the little cheapo ones don't have much filter area and they will crack. Regardless, if you install a strainer, it's a real good idea to carry a 1/2" barbed splice fitting so you can bypass the strainer if it starts leaking. It will fill your hull up quickly.

  5. #5
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    Id also replace the 90s (elbow fittings) on the the heads to straight fittings...less chance of stuff getting trapped......

  6. #6
    right had it in the water this arvo after taking it apart and giving everything a good flush and no overheat water coming out all pissers ect at idle ect so thats great. NEW problem. im sure this is taking on from the other day when we ran out of fuel switched it on to reserve it just hasnt been the same since we were able to get it back to shore after alot of issues getting it started but it just didnt run right and then it would start die start die with fuel still in tank. i filled it up and ran it on on to give it its flush out ect seemed fine. having it back in the water and the same thing last time when had it back in the water before the over heat it just doesnt seem to move. before yourd pull trigger and shed be gone. now it cruzes around at about 15kmh with quater throttle but hold it there and itll slowly build up speed and everynow and then itll kick right in and take off. will this be a carb issue? also i noticed its pumping out alot of white smoke/steam thanks guys

  7. #7
    steve45's Avatar
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    The straight fittings are nice, but if you go that route, make sure you get the right ones. They have orifices in them to control water flow.

    That said, if you're getting white smoke/steam out of it, you may have blown a head gasket.

    Do a compression test.

  8. #8
    yeah sorry forgot to add that comrpession is good 120 across the lot. took it out today for we test same issue just no power and overheat very quick took it out of water and hooked it onto hose water coming out everywhere it should. took plugs out straight away none seem hotter then the others. did notice one of the throttle cables is a has free play and the other doesnt. checked fuel filter and it was fine not much fuel sitting in it tho. so bite the bullet and take it to shop and get way over charged???

  9. #9
    i played with fuel tank over weekend to change fuel sender anything here could be problem fuel vent line???

  10. #10
    steve45's Avatar
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    Did you pull the engine out to change the fuel sender? Just curious. I don't think that would affect anything unless you kinked or pinched the water inlet hose or something.

    This engine doesn't have any aftermarket pistons or cylinders, does it?

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