Water in the oil - cold cylinder - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 49 (permalink) Old 04-03-2016, 08:32 PM Thread Starter
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Water in the oil - cold cylinder

Noticed a little bit of a Milky look to the oil a couple of days ago then after two more starts I'm starting to get a pretty obvious whiteness inside the oil check window. If you put your hands at the back of the bike the front cylinder is ice cold coming out the exhaust and the plugs look good. Please tell me before I tear this engine apart that there could be any other reason before this a sign of a bad head gasket that I could check without tearing the engine down.


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post #2 of 49 (permalink) Old 04-03-2016, 08:50 PM
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May I ask the mileage and which bike? Has there been a change in ease of starting, idle and throttle changes?

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post #3 of 49 (permalink) Old 04-03-2016, 09:07 PM
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Do you let the bike warm up completely? Condensation can build in the oil

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post #4 of 49 (permalink) Old 04-03-2016, 09:20 PM
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Are those two plugs washed clean when you take them out?

Does water splash out of the cylinders with the plugs out? Take one plug out and start it up.

The exhaust mixes inside the Goat's Belly, so check cyl. temp at the cyls and headpipes.

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post #5 of 49 (permalink) Old 04-03-2016, 10:27 PM Thread Starter
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(1) it's my 2005. 35k miles, 22k were put on in 9 months between last summer and the summer before. Honestly it's time for the head gasket to go. It's on it's original everything, stator and all. Just maintenance items have been replaced.

(2) this happened coincidentally after my last oil change, surely not related.

(3) See picture, it's pretty screwed.

(4) I do not have a goats belly.

(5) plugs are just white and clean as they should be. 20k on them. Haven't started it yet without a plug to check for water.
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post #6 of 49 (permalink) Old 04-03-2016, 10:36 PM
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(5) plugs are just white and clean as they should be. 20k on them. Haven't started it yet without a plug to check for water.
Unless they only have a few minutes on them, there should be some coloration. Still, everything else points to a head gasket on the cold cylinder.

That oil is gone, I wouldn't start it again.

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post #7 of 49 (permalink) Old 04-03-2016, 10:39 PM
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Yup.looks like a milkshake.condensation would be a little,not milky

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sportster seat

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post #8 of 49 (permalink) Old 04-03-2016, 10:54 PM Thread Starter
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Ok so I started it and there is no water blowing out nor visibly present through the plug hole.

Here's a hopeful question that may be of interest...... I had a leak at the inlet of the thermostat housing where the rear inlet bolts to the housing using a rubber grommet. It came on suddenly and leaked a LOT near the filters and all over the airbox. Is it even remotely possible that the coolant entered the engine through the airbox and filters and ended up in the engine? I know for a fact there was enough coolant to have entered the system this way, but WOULD IT get into the engine and do this if it did?


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post #9 of 49 (permalink) Old 04-03-2016, 11:06 PM
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Quote:
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Ok so I started it and there is no water blowing out nor visibly present through the plug hole.

Here's a hopeful question that may be of interest...... I had a leak at the inlet of the thermostat housing where the rear inlet bolts to the housing using a rubber grommet. It came on suddenly and leaked a LOT near the filters and all over the airbox. Is it even remotely possible that the coolant entered the engine through the airbox and filters and ended up in the engine? I know for a fact there was enough coolant to have entered the system this way, but WOULD IT get into the engine and do this if it did?
Don't think it could. Is the crankcase vent hooked up? It could get water through there if it's open, even while washing it.

Could also be the water pump leaking, but that won't explain the cold cylinder.

Was there compression at the cylinder?

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post #10 of 49 (permalink) Old 04-03-2016, 11:18 PM Thread Starter
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Dont have a compression tester, but bike runs fine. I was gonna pick up some oil, filter, and a compression tester tomorrow. Do a compression test, change the oil, see what happens. The cylinder has always been colder, but tonight it is ice cold. I am able to make it heat up holding the rpm for ten seconds at 2500 or higher.


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