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sonofadocker sonofadocker is offline
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First recorded activity by BoatBanter: Jul 2006
Posts: 55
Default OIL IN THE WATER - mercruiser 6 cyliner 165 hp

While cranking the engine over prior to finding the oil/water mix i
noticed water dripping from under the manifold. the water was dripping
only the same time as cranking was being done.

this could be the failed manifold as you suggested or the rain flooded
engine from the previous "helper".


again, i would like to know what others would do in this case ?

crank her with the plugs out and change the oil and try a restart or
just put another engine in over the winter ?

thanks

sonofadocker.

Shortwave Sportfishing wrote:
On Mon, 4 Sep 2006 17:36:07 -0400, "Eisboch" wrote:


"sonofadocker" wrote in message
roups.com...
What would make water suddenly mix with the motor oil ?

The boat has been great and only has 900 hours on it in 30 years.

The boat would not start after the hurricane left my area. The motor
would not start after many attempts. I assumed it had just been soaked
from the 12 inches of rain.
I started checking everything from fuel air spark to oil. when I pulled
the stick it was milky gray.

I drained it asap and now have fresh oil in it. I have not attempted to
restart it until i get advise.

The engine appears ok to the naked eye. All the gaskets, elbows are ok
when looked at. My neighbor has the same boat/engine. he had water
enter through the carburetor spark arrestor.

The water would only come from a cracked intake/water cooling manifold
or an exhuast elbow right ????

Again, motor has been healthy and was tuned, oil change in June 2006.I
went for a three hour ride just before the bad weather arrived.

Thanks in advance.


Was it left in the water (at a slip) during the hurricane? If so, you may
have had water driven up the exhaust and into the cylinders from heavy seas
breaking on the stern.


I'll second that.

Also, you might want to check the exhaust baffles to see if they are
stuck open or rotted through.