Milky oil in cylinder - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
 
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post #1 of 8 (permalink) Old 05-13-2019, 08:11 AM Thread Starter
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Milky oil in cylinder

Hi everyone- I have a 99 gts that was having trouble starting. I checked the plugs. One looked the ok. The other was milky and gross. I took the carb off and found that milky crap coming out of the pulse line. It was also in the carb. What could it be? I have a carb rebuild kit but if I rebuild it now the milky stuff would probably fill the carb again. Help! Thanks!!
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post #2 of 8 (permalink) Old 05-14-2019, 05:23 AM
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Sounds like water in the crank case.
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post #3 of 8 (permalink) Old 05-14-2019, 11:13 AM Thread Starter
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Is there a way to get water out of the crankcase?
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post #4 of 8 (permalink) Old 05-15-2019, 05:21 AM
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The question should be, how did the water get in there in the first place, and how much ? It is possible it was not witerized properly, or not at all, and froze and cracked the head or cyls, or leaking head gasket.
Water is detrimental to crank bearings, hence the reason to act very quickly to a ski that has been submerged. You only have hours before rust forms on the bearings.
You have two options to get the water out. Pull the engine, tear it down and spit the cases and check the bearings, and check the head, cyls, and exhaust manifold for cracks, or run it very easy on the water at operating temperature for about 15 min (but I would refrain from this until further investion eliminates the possibility of cracked or leaking engine components).
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post #5 of 8 (permalink) Old 05-15-2019, 07:14 PM
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Check the oil pump breather intake. I submerged my 2002 fx140 and fought milky oil for weeks before finding the breather hose was off and the nipple sat in bilge water sucking it in anytime I ran the engine. Replaced the hose and another oil change and it runs great.
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post #6 of 8 (permalink) Old 05-15-2019, 08:23 PM Thread Starter
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Unfortunately it wasn’t winterized. Is the oil pump connected to the carb?
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post #7 of 8 (permalink) Old 05-16-2019, 04:24 AM
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Quote:
Originally Posted by beef1337 View Post
Check the oil pump breather intake. I submerged my 2002 fx140 and fought milky oil for weeks before finding the breather hose was off and the nipple sat in bilge water sucking it in anytime I ran the engine. Replaced the hose and another oil change and it runs great.
This is a 2 stroke. Completely different animal. There is no breather on the oil pump.


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Unfortunately it wasn’t winterized. Is the oil pump connected to the carb?
The oil pump is on the front of the engine.
Does it freeze where you are, and is it stored outside or in a somewhat climate controlled inside storage ?
I would do a compression check and see if the numbers match on each cyl. to start.
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post #8 of 8 (permalink) Old 05-16-2019, 06:50 AM Thread Starter
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It gets very cold in western NY. I’ll check the compression. Thank you
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