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  1. #1

    Xl1200 ltd rebuild gone wrong! Water in all cylinders.

    So I got myself a deal on a 99 1200xl limited with a blown piston on the middle cyl. Replaced the cylinder, all 3 pistons, gaskets, cleaned out the crankcase, new gaskets, etc. Went to start it today for the first time...wouldn't start.. Long story short I had water getting into all three cylinders. I had a hose connected obviously because it was still on the trailer.

    Fair to assume I mucked up installation of the new head gasket, or are there other ways the water could be getting in? Also, if it came in through the head, would there also be water getting into the crankcase, and if so, do I need to take the cylinders off and get it out or would it clear out on its own if I get it running tomorrow? Any advice would be much appreciated!


  2. #2
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    Your supposed to start it up first then turn on water. Might have flooded engine. Pull plugs and turn over engine to remove water. Get it running now nd run the piss out of it.

  3. #3

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    get the water out as soon as possible.

    If water is getting into the head it could be that the head is warped, you may not have tightened the bolts in the correct order. I would

  4. #4
    Yamaha artisan Cutlass's Avatar
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    Just to clarify, you need to follow a sequence when running on a hose.
    Start engine, turn on water....turn off water, then shut off the engine. If you don't follow that sequence, water can pool up in the exhaust and back flow into the engine cylinders and crankcase.
    It is extremely important to get the water out very soon...like NOW. then you need to immediately run the engine for a nice extended period of time right away to evaporate the remaining water out and get the 2 stroke oil circulating throughout the engine so it doesn't rust up solid.

  5. #5
    Yeah, so I got it cranking a time or two, when my bud was like , dude turn the water on! So I turned the water on, kinda high pressure, and continued to give it a go... I did not know that you had to start it first. Shit, and I already loosened all the head bolts now!

    After a rebuild, should the motor take longer than normal to start?

  6. #6
    Yamaha artisan Cutlass's Avatar
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    possiblly. It sometimes takes a bit of fussing around to get the fuel lines, filter, and carbs primed up and full of fuel.

  7. #7
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    It's possible since its been sitting a bit

  8. #8
    Well I left it be at 5 this afternoon... After disconnecting the water and cranking it some more... Can't get at it till 8 am tomorrow. What should I do, assuming its water because of not following the proper procedure.

  9. #9
    do what was mentioned before.

    1. pull plugs
    2. crank until all water is out
    3. install plugs
    4. get it to run
    5. turn on water
    6. run it for a LONG time to burn up the moisture
    7. turn off water
    8. turn off engine.

    Water SHOULD NEVER be running if the engine is not. You're not the first and certainly won't be the last.

  10. #10

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    Did you ever pressure test motor after rebuild?

    Was there water in hull as well or just in the cylinders?

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