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  1. #1
    mr. happyfunbear tenjuna's Avatar
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    Hydrolocked...now what?

    this is in regards to a friends ski, but the short story is his ski got rolled by a new rider, they got back on and of course immediately hit the starter.

    after towing it back in, pulling the plugs and running the water out of it, the ski starts again, but is running at reduced power now.

    his ski is a 1997 tigershark daytona 1000, and I realize this is the polaris forum, but I assumed there might be some general tips I could pass on to him.

    my guess was either a timing issue or the crank got knocked out of "alignment".

    he has put in new plugs, new gas, checked all lines and connectors. the ski starts up and runs, just not at full power.

    anyone have any better guesses?

    I was going to post in the tigershark forum, but I knew I would get a faster answer here.


  2. #2
    Moderator beerdart's Avatar
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    Check the electrics. Stator and any e-box if equipped.

  3. #3
    mr. happyfunbear tenjuna's Avatar
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    ah I didnt even think to check the electrics...thanks will pass that on.

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Check for water in the fuel now too.

  5. #5
    mr. happyfunbear tenjuna's Avatar
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    we actually replaced the fuel entirely already, but it couldn't hurt to do it again I guess.

    just to satisfy my curiosity, would a crank out of phase make the ski not run as well or would it just not run at all? I do not know the symptoms of that problem.

    same question on the timing.

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by tenjuna View Post
    ... just to satisfy my curiosity, would a crank out of phase make the ski not run as well or would it just not run at all? I do not know the symptoms of that problem.

    same question on the timing.
    Depends on how badly the crank got twisted, if that is what the problem is.

    I would expect the basic method for checking crank timing is the same as the Polaris engines.

    Get one piston to exactly TDC, then measure how far down each of the other two pistons is. Should be the same distance. Do this with each cylinder at TDC.

    Check cylinder compression.

    After confirming the electrics are dry, try connecting only one spark plug at a time. See if the engine will start with only one spark plug wire connected.

    Start with the MAG (front) cylinder. Unplug the other two spark wires, and ground them on the engine.

    You may need to hold the throttle part way open to get it to run on only one cylinder. You just need to run it for a few seconds to confirm it can run on that cylinder.

    Then unplug and ground the MAG spark plug, re-connect the CEN (middle) spark plug wire, and start the engine again.

    Finally, disconnect the CEN plug wire, re-connect the PTO wire, and again see if it will start/run.

    This will tell you if the engine really has spark on each cylinder, and that each cylinder can indeed run.

  7. #7
    mr. happyfunbear tenjuna's Avatar
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    ok so change gas, check electrics, check spark, check crank.

    he has basically given up so I will do all of this this weekend.

    again, the ski runs, it just no longer gets to full power, so any other thoughts along those lines are appreciated.

  8. #8
    Connecticut CrazyA's Avatar
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    Quote Originally Posted by tenjuna View Post
    ok so change gas, check electrics, check spark, check crank.

    he has basically given up so I will do all of this this weekend.

    again, the ski runs, it just no longer gets to full power, so any other thoughts along those lines are appreciated.
    I'm not sure if the Shark has a remote fuel pump, or if it's integrated within the carb(s) but make sure to check it out. Water in the crankcase can damage the fuel pump diaphrams through the pulse line.

  9. #9
    mr. happyfunbear tenjuna's Avatar
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    ok added to the list thanks.

  10. #10
    Moderator Snoman's Avatar
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    Quote Originally Posted by CrazyA View Post
    I'm not sure if the Shark has a remote fuel pump, or if it's integrated within the carb(s) but make sure to check it out. Water in the crankcase can damage the fuel pump diaphrams through the pulse line.

    The Daytona 1000s do have a remote Fuel pump...I would take that apart and clean it out..Also i am with you guys on the timing thing..If he spun the motor,or tried to while water was in there he may have knocked it out OR he may have cracked a piston..I know of a few people who hydro locked and acually cracked pistons doing it..

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