Thanks Noah,

Actually the engine is still apart, and I had checked the components for
signs of water marks in the exhaust and intake manifolds. They were all
about the same in color, with no marks of rust anywhere. Prior to
dismantling the engine after I took it off the lake, I ran a hot compression
test. All the cylinders were within the book tolerance. The heads looked
clean too, with no traces of water leakage around any of the gaskets. It is
leading me to believe that the block may have a crack.

I live near Austin Texas, and the boat remains outside all year. It hardly
ever drops cold enough to be worried about freezing. As far as I know, the
engine has never overheated either. It has always ran around 160 degrees. I
never run it out of the lake unless I have a water system cooling the
engine.

I will take the heads, manifolds and risers down and let a machine shop go
over them. I'm afraid they may find nothing wrong, then what? Block??

Dave



"noah" wrote in message
...
On Mon, 13 Oct 2003 04:08:08 GMT, "DMU" wrote:

I have a 93 model OMC (Cobra) IO. 5.8 Liter (351) Ford...
I have an issue with water emulsion. I have taken the heads off, exhaust,
intake and
even though there is water all over, there is no direct indication that
the
head gaskets
are blown or any of the top engine components being damaged. Except for
the
possibility of a cracked block, does anyone else have a idea how the
water
could
be getting in? Is the water pump a suspect?

Any help at all would be appreciated.

Dave


Dave- the water pump is isolated from the engine "internals" by the
block and head gaskets. If you've already pulled things apart, it may
be more difficult to find the problem. When you re-assembled, did you
use new gaskets?

A compression check will usually determine if you have a warped head
or bad head gasket. You'll need a good mechanic to determine if
there's a crack in the block.

Good luck,
...carry on.
noah

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