I have a mercruiser 4 cylinder that gets water in the oil ever season. The
boat is tarped and the engine cover is on and all entrances to the oil are
blocked. My understanding is that as condensation gets in and around that
area it can collect that way. Now mind you I live in Colorado so even
thought the boat is covered some water will drip through the tarp and wind
up in the bilge. With the cold tempters in the winter Ice will collect
around where the drain hole is and block the drain hole. So as it melts and
freezes there is allot of moisture in the air around the engine. I found
that I just had to drain the oil and replace it . Then put some penetrating
oil down the spark plug holes and let it sit for a few hours. Then it fired
right up. I ran it and let it get good and warm. Shut it off and flushed out
the oil again. It seems to be a spring ritual here with this boat.



"DMU" wrote in message
.. .
Yes it does bill. But it is placed in such a manner that the water would
have to travel up hill in order to get to it. Plus a cover is over it like
an umbrella. Unless the rainfall fills up the engine compartment first.
There is no feasable way the water could enter through it. I believe a
manifold is to blame or I have a cracked block. I'll keep you posted.

Thanks again.


"Wildest Dream" wrote in message
. net...
It still has an intake manifold for the air doesn't it?


"DMU" wrote in message
...
The boat is EFI not carbed - but thanks.

"Bill Sheffield" wrote in message
...
You say that the boat is stored outside..... I have seen a lot of
boats
that
have water in the oil. Sometimes it is caused by rain water leaking
into
the
motor box and running down the carb. Check this possibility before
you
go
any further....

Bill