[C320-list] Water on floor by water pump

[Christian]

Doug,
my 320 is a Perkins, so not familiar with Yanmar setup and if this applies
to you.  I have an anti-siphon valve mounted on the starboard bulkhead
right next to the engine.  Some time last summer, the duckbill on my siphon
started going bad, and I'd occasionally get water similar to you describe,
when the valve leaked and water ran down the bulkhead , forward, as she
rolled in some waves.

I've since replaced the valve, no wetness in that area, or under the engine
bilge anymore.

Maybe this helps. maybe not.

Christian Caperton
1994 C320 "Canuck" #138
Monroe Harbor, Chicago, IL

On Thu, Jun 13, 2019 at 12:56 PM Doug Treff <doug at treff.us> wrote:

> All,
>
> I'm tracing an engine water leak - it appears randomly after running the
> engine - some days it's dry and other days, I find a small amount of
> wetness on the floor starboard side right by the companionway ladder. Not
> much, usually can be cleaned up with a single paper towel.
>
> I have Hull 350 with a Yanmar 3GM engine. I went to the boat yesterday and
> ran the engine in the slip for about 30 minutes. Completely dry. Other days
> I find a small amount of water there. After shutting down the engine
> yesterday, I felt all around the water pump and various connected hoses
> with a paper towel, it came back dry everywhere.
>
> Does anyone have ideas? Obviously I suspect the water pump. It looks like
> the original pump and hoses, based on the fact that it has the factory
> paint on everything, including the hoses. The impeller was changed this
> spring. I made sure to clean the impeller cover and mating surfaces before
> putting in a new gasket.
>
> I'd love to hear any ideas. Thinking maybe it's time for a new pump since
> it's 23 years old, but that's the spendy way of fixing it.
>
> --
> Doug Treff
> doug at treff.us
>
>