Need Help trobleshooting 1989 40hp Merc

The best news is that it could have just been loading up from all the
trolling. Sometimes the exhaust water mixes with the exhaust oil and makes
that brown mung.

Past that I'd say you have a water leak at the exhaust divider.

-W

"Gfretwell" <gfretwell RemoveThis @aol.comGreg> wrote in message
news:20031013121257.24972.00000316@mb-m17.aol.com...
  > >Upon
  > >taking the boat out of the water I noticed a frothy (brownish) oil and
  > >water mixture leaking out of the exhaust ports and the water ports.
  > >Any ideas?
 >
 > Two ideas,
 > Water in the gas
 > Leaking water jacket<less likely>
 > I suppose it could just be a weak cylinder, misfiring for all the usual
 > reasons, filling the exhaust channel with unburned fuel.
 >
 > Start with the garden variety tuneup, plugs, compression, timing, carbs
etc.<!-- ~MESSAGE_AFTER~ -->
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