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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

Thanks for your reply. The boat was docked during the storm and the
stern was into the wind and waves. the water rose almost 4 feet at the
dock. my dock is at the dead end of a logoon.
i checked the boat many times to see that the pump was keeping up with
the rain water.
i did not think the water could be pushed up into the engine.

if this is the case then some engine cranking with the plugs out and
another oil change might save the engine ?

i have good spark and fuel delivery as of yesterday prior to finding
the water in the oil.

do you all think the motor is salvageable ???

another oil change
Eisboch wrote:
"sonofadocker" wrote in message
oups.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.

Eisboch