[C320-list] Overheating Engine

[Pat Ireland]

Joe - What I know, I learned from this site.  Don't be discouraged.  It's
been a busy weekend.

Suggestion for what to do when no one answers immediately.  Go to the
Catalina 320 International site and click on discussion.  There is a link
there to the forum posts.  On the upper right of that page is a field to
input your search criteria.   "engine cooling water"  or "no water" or
"pressure water" are examples that might work.

On the engine water problem - Was the water coming out of the exhaust after
you changed the impeller a strong or weak flow?  If it was weak, you
may have a worn pump.  If it was strong, then something else like a new clog
may be the problem.

Several owners have found that sand pulled into the pump has damaged the
impeller cover plate enough that replacement is required.  It may be
possible to polish out scratches and grooves to get a bit of extra life out
of the cover.

On the pressure water problem - if you are not seeing fresh water in the
bilge, you may have the water line valves turned off or the pump may be
plugged.  There is a screen in the pump intake that may have collected
debris and need a cleaning.

Good Luck

Pat, 801

On Wed, Jul 6, 2011 at 12:58 PM, Donald Lawson <dnclaws at aol.com> wrote:

> Joe
> I sail/motor in  heavy kelp and eel grass infested areas. Clogs my intake
> thruhull and filter and destroys my impellers.  I start at the thru hull,
> intake filter and lines to the pump. If all clear pull the output line off
> the pump, turn engine over and check pump output. If good then go to the
> elbow in the exhaust riser, it might be plugged. If all of that is good
> then???
> Don #1005
> On Jul 5, 2011, at 7:01 PM, Joseph Aberdale wrote:
>
> > Today I started the Yanmar engine in my 2002  C320 and the overheating
> light and alarm went on. I discovered that engine cooling water was not
> being discharged from the hull but you could see the discharge of air.
> Further investigation revealed that water was being drawn in through the
> intake and getting to the engine. Is the likely problem the water pump? I
> recently installed a new impeller and the engine ran well after that. How do
> I determine if the water pump is bad?
> >
> > Also, I cannot get water to run out of the galley and bathroom faucets.
> The tanks are filled and I can hear the water pump operating but do not get
> any running water. Any thoughts on how I should proceed from here?
> >
> > Thank you very much.
> >
> > Joe
> > #908
> >
>
>