[C320-list] Water Temp warning light

[jim brown]

Might be useful to check the engine component parts teno with a cheap infrared temp sensor (eg Harbor Freight or Robyi) and point it at the areas where the temp alarm sensor and the the temp sensor for the gauge are and also the temps at the radiator. If any of those are above the gauge temp then the gauge temp is in error and I would be careful that there is not a real overheating problem as mentioned by Karl. 


Jim Brown



________________________________
 From: Marko Jamnik <mjamnik at markocreative.net>
To: C320-List at Catalina320.com 
Sent: Monday, July 9, 2012 3:59 PM
Subject: Re: [C320-list] Water Temp warning light
 
Thanks Karl

It's a Westerbeke 30B


On 2012-07-09, at 3:51 PM, Karl Mielenhausen wrote:

> Marko,
> 
> It would be helpful to know which engine you have.
> 
> I suspect your impeller has broken/missing vanes.
> Was it inspected this spring before commissioning?
> Was it removed during winterization? (They can take on quite a "set" over
> the winter, to the point where the vanes fracture upon start-up.)
> If the impeller checks out, you may have a partially fouled heat exchanger.
> Here are some Mainsheet references to a hot running engine....
> http://www.catalina320.com/article.php?story=20100117205621921
> http://www.catalina320.com/article.php?story=20090718083201878
> 
> Karl Mielenhausen
> 
> 
> On Mon, Jul 9, 2012 at 10:12 AM, Marko Jamnik <mjamnik at markocreative.net>
> wrote:
>>> Things just keep happening. One way of keeping me on my toes.
>> 
>> Ventured out for a sail the other day and everything was working normal,
> the engine started, water was circulating through the engine.
>> Twenty minutes under power my water temp light came on as well as the
> alarm. The gauge was a normal 80c, the coolant was full, the impeller was
> changed two years ago with 44 hours on the new one. My intake filter is
> clear. I ran the engine for approximate 30 minutes gauge still reading 80c
> and then I decided time to shut it down. I let it cool down and then tried
> it again hoping it was a temporary thing.
>> I would appreciate any other options I may have over looked. With the
> gauge being normal I ruled out the thermostat.
>> 
>> Mark
>> Lake Ontario
>> #304
>