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post #1 of (permalink) Old 07-30-2003, 06:56 AM Thread Starter
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Water in valve cover

I have a very strange problem. I find water in my valve cover only in the winter. How do I know? There is a mayonnaise like substance around the oil filler opening. There is no water in the oil. The dip stick is clean. I do not have to add water to the radiator.

In the summer, there is no problem. What’s up with that?
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post #2 of (permalink) Old 07-30-2003, 07:18 AM
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Re: Water in valve cover

Condensation. In the winter your hot motor cools and creates this condensation where it can't easily evaporate. That "mayonnaise" that you found near the oil fill opening IS oil/water mixed. I believe this is not uncommon. You may want to check your PCV and Crankcase valves and make sure they are unobstructed. Otherwise put it down to a seasonal thing that can't be helped - other than garaging it and keeping it warm on those cold winter nights! [img]images/graemlins/wink.gif[/img]

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post #3 of (permalink) Old 07-30-2003, 08:46 AM
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Re: Water in valve cover

This is usually caused by short runs. My son had this going to and from school. He'd just get it warm enough to heat up the inside a little ...and shut it down. As it cools cold moist air gets in and condenses ...but the engine never warms up enough to vaporize it again and expell it via the PCV system. Repeat the cycle too many times ...and you get that emulsified goo.

Solution ...take longer trips daily.
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