Jason Bourne wrote:

JohnH wrote:



On Tue, 13 Jul 2004 23:24:33 -0400, mike hicks wrote:


[snip]


Mike, I have the same engine in a 1997, also in the Bay. If this were
mine, I'd replace the thermostat first, and then see what happens. Have
the manifolds and risers *ever* been replaced?

My normal operating temp is about 160. It gets there and stays there.

Hopefully, some of the mechanic types will provide a little more, and
better, information.

John H

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



Greetings:

On my friend's boat there were a couple of hoses that (IIRC) came
out of the thermostat housing to the front of the heat exchangers. Inside
these two hoses (one on either side) was a small check ball mounted on a
brass rod with a spring on it that passed through the thermostat housing so
that there is one ball on each side. They have a nasty habit of getting
mineral deposit buildup and sticking (closed) to the thermostat housing. If
you have these try cleaning them up real good. Good luck!

-Jason


Thanks for the reply. I pulled the housing off and it looks like it's
not long for this world. There is lots of corrosion. The area with the
balls was particularly bad plus lots of gunk in the springs. I've
cleaned it up (probably replace it this winter) but I haven't put it
back on yet. I'm replacing the thermostat even though I think it's OK..

mike