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My 947 DI is getting water in the cylinders

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uinta_rob

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My ski wouldn't start (easily) once it had been in the water. I took it to my local shop, they hooked the water up and ran water through it for about 5 min (without the motor running), pulled the spark plugs and there was an extreme amount of water in the cylinders. The mechanic told me the most likely culprit was the head pipe, next the y manifold, and lastly the head/head gasket. Does that sound logical? After that diagnosis he quoted me a lot of money to pinpoint the problem, and I couldn't afford it, so I am trying to diagnose & fix it myself. I am a total newbie at the whole PWC thing, but not totally new to motors. I thought I would tear down in the order he said he would. I just got the head pipe off and it is ready for testing, but nothing visible. However, I can see that the head bolts have been worked on before, so I am now leaning towards a head gasket, or bad head. He said that there was good compression (at 120 psi I think is what he said, but that seems low to me) on each side. Anyone have a recommendation for proceeding before I move on to the exhaust manifold?:willy_nilly:

Rob
 
120 is getting low on a seadoo. Since the compression is low... I would start with a head gasket. Get a new factory gasket, and coat it with "Copper Spray", and put it together. (and hope the compression comes up)

If you still have water... then replace the pipe, and manifold gaskets.
 
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