On Fri, 3 Jun 2005 08:50:55 -0400, "Mark" wrote:

Good thinking John! I had almost forgotten about the engine mounted pump.
Short of removing it and checking the impeller, if you or anyone has an
suggestions how I could test itwithout removing, it would be much
appreciated.

Mark (the rail & canopy hook guy)
www.ripnet.com/vtf/prod03.htm

"John H" wrote in message
.. .
On Fri, 3 Jun 2005 07:37:16 -0400, "Mark" wrote:

I have a 350 with an Alpha 1 that is overheating at low rpms. Diagnosing
the same problem last year, I had to have the water pump in the lower unit
replaced. I will troubleshoot all other possibilities this weekend
before
having to pull the boat out, but thought you folks in the news groups may
have some ideas as to what other causes it could be.

The boat is an 86 and I have owned it for about ten years for having to
replace the outdrive water pump. Any estimates as to what the life
expectancy of the water pump should be?

First I will be checking for leaks, then changing the t'stat on the engine
(as I do not recall when I last replaced it), but beyond that, Ican only
suspect either the new (last year) pump has failed prematurely, or the
mechanic I hired to do it did.

Mark (the rail & canopy hook guy)
www.ripnet.com/vtf/prod03.htm


Have you checked the circulating pump on the engine? Mine conked out after
about
six seasons.

I realized I had problems with it when I noticed a rust trail coming from the
bottom. There is a seep hole that will leak when the seals in the pump go bad.

--
John H
On the 'PocoLoco' out of Deale, MD

"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
Rene Descartes (A true binary thinker!)