"Harry Krause" wrote in message
...
JohnH wrote:
On Fri, 10 Sep 2004 16:27:17 -0400, Harry Krause
wrote:

JohnH wrote:
If you read the initial 'bad day on the bay' post, you are aware that I
had a
problem last Friday.

Inspected the boat on Monday. Found the cause of the smoke to be the
overheating
of the insulation on the wiring harness which was laying on the exhaust
elbow.
(Probably done by the manufacturer.) Also, the lack of water going
through the
starboard exhaust caused the rubber section of exhaust pipe just below
the elbow
to melt out, The smoke was due to all the melting rubber.

I removed both sets of risers and manifolds and the other damaged parts
on the
starboard side of the engine (5.7L Mercruiser). The wiring harness was
repairable. The riser didn't have an obvious plug.

When the manifold was removed from the starboard side, I noticed a
discoloration
in the exhaust port of the third cylinder from the front. By
discoloration, I
mean a reddish (rusty) color. I didn't feel it, at the time, but today
the
mechanic at the marina said it was wet when he looked at it a day
later. The
mechanic didn't do anything further than look at it and feel the
wetness with
his finger. I also, today, felt the same port on the manifold, and it
was also
wet.

The mechanic wants to run a compression check on Monday. Now I'm
concerned that
what I thought was a plugged up riser may be something much more
serious.

Questions:

What could cause a wet exhaust port on one cylinder?

If there is a problem with that cylinder, how could it have prevented
water from
going through the riser?

If I try to pour water through water channels in the riser, and it
either comes
out or doesn't, can that diagnose a plugged riser?

The engine didn't sound like it was missing. On Monday we'll start it
and see
what comes out of that exhaust port. (Without manifolds and risers,
that should
be a disquieting experience!)

Thanks for any help. Smart assed comments about my lack of V8 expertise
will
also be accepted.

John H

On the 'Poco Loco' out of Deale, MD,
on the beautiful Chesapeake Bay!



Too bad you're such an asshole...if you weren't, I'd be glad to loan you
Yo Ho while I'm out of town.

Yo Ho is full of dirt. I wouldn't want to have to wash it. Besides, I'm
holding
out for the 36 foot, Zimmerman style, lobsta' boat.

John H


Nice try. Yo Ho is washed out completely at least once a week or after
every use and in fact, was just washed out and waxed. She's got 120
gallons in the tank, and is ready to rock and roll, probably on Sunday.
Interesting you'd comment about my alleged lack of maintenance, since
yours is the boat that is regularly out of commission because of a
broken outdrive or a burned out engine.

As I said, though, if you weren't such an asshole, I'd loan you the boat.



And again you have shown your class.............or lack of.