[C320-list] Engine overheating

[Marko Jamnik]

Hello Colin

I did have an overheating issue with the engine alarm going off this last summer. I have a Westerbeke engine with a 1000 hrs. The engine has been well maintain. Three years ago I had the engine removed and had it reconditioned with new hoses, mounts and fuel injectors. With all that said, three years later I had encountered a heating issue. The end result was  they cleaned the sea strainer and all hoses, compressed hose caused a restriction and impeller bits were found in the heat exchanger end cap. They replaced hose and the end cap gasket. Temp switch also failed due to the overheating. Replaced raw water impeller and gasket. Final test was done under load and the temp held at 180deg.

Marko

Marquesas
#304
Lake Ontario


On 2013-01-06, at 5:30 PM, Colin Evans wrote:

> Hull 774,   2000 model
> Over the last few months the temperature gauge has been reading a bit higher
> than the normal 160 degrees, up to 180.  .  Plenty of water is pumping
> through and the raw water filter is clean. Coolant reservoir is full to the
> mark.
> Yesterday it went to 240.  I shut down the engine , then re-started a few
> minutes later and it went back to 180 and stayed there for a while then
> jumped to 240 again.  I shut down the engine again and the same thing
> happened.  Back to 180 degrees.  The water warning  light didn`t come on.
> The engine compartment didn`t seem particularly hot.  It was a hot day,
> about 35 C (95 F)
> We anchored for an hour then motored back to the marina , about 20 minutes
> and the temp never went above 180.  While reversing into the pen the temp
> dropped to 170.  
> Any ideas, sender or display?
> 
> *************************
> Regards
> Colin Evans
> Watermark 
> Hull 774 
> Lake Macquarie, Australia