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  1. #1

    Water on cylinder head/spark plugs!!! HELP ME..

    I'm finally finish with my rebuild, but it won't start. It is a 93 SL750. I've installed a 3 outlet fuel pump, new #3 piston and gaskets. It's getting fuel but when I cheked the spark plugs and the cylinder heads there was small drops of water. Is the cylinder gaskets leaking water?? Could there be some water in the crankcase?? I'M LOST.... Please help me!!!
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  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Possible gasket leak. Retorque the cylinder head down to spec. Leave the plugs out and crank the engine over. Is any water spraying out of the plug hole? If so, water is in the bottom of the engine.

    Try a compression test to see if the head or base gasket is leaking.

  3. #3
    Moderator beerdart's Avatar
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    Did you torque the cylinders with the exhaust manifold attached?

  4. #4
    I've only change piston #3, so I've only got the third cylinder of. I attached the cylinder, torque it and then torque the exhaust manifold.

  5. #5
    But what do I do if there is water in the bottom of the engine?? I'm not interested to take the hole engine out!!!

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Vesterbye View Post
    But what do I do if there is water in the bottom of the engine??
    I'm not interested to take the whole engine out!!!
    Crank the engine enough to pump most of it out the #3 spark plug hole - enough that you can get it running on the other cylinders.

    Once most of the liquid is out of #3, put the spark plug in, and try running it. Might have to dry the plug off a few times and retry, but eventually it should run on all three cylinders.

    If there is WAY too much water in the bottom, there are drain plugs on the exhaust side of the crankcase. Remove the one for #3.

    In general, you need to tighten the exhaust manifold to the cylinder before you tighten the cylinder base down. The exhaust manifold aligns all the cylinders together.

    Make sure the gaskets are all working before you connect the hose again.
    Last edited by K447; 05-22-2008 at 09:36 PM.

  7. #7
    Moderator beerdart's Avatar
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    How were you trying to run it? On the hose? Did you have the water running before the motor started?

  8. #8
    I've run it on the hose, and I did turn on the water before i run it..

  9. #9
    Moderator beerdart's Avatar
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    Never turn the water on before the engine starts you can fill the exhaust with water and it can get into the cylinders.

  10. #10
    800AMSOIL4U's Avatar
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    Quote Originally Posted by Vesterbye View Post
    I've run it on the hose, and I did turn on the water before i run it..
    Think you just found your problem.

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