A leak at the heat exchanger was exactly what I suspected. The heat
exchanger ends should come off easily with 4 nuts/bolts on each end. The
tube bundle and deflector plates should just slide out. If even just the
o-ring has gone bad you can get coolant leaking into the raw water. You'd
ever
Alan,
A few seasons back, after motoring back home, I noticed antifreeze
underneath the my engine (Yanmar 2GMF). What I eventually discovered
was that one of the 'bled or drain screws' had loosened just enough to
cause a small leak. On my engine, there are, I think, 3 outlets which
have
: Re:
Stus-List Antifreeze leak By the way, what kind of engine do you have? The
reason I ask is that a friend of mine had a Westerbeke, and it turns out there
is a guy who fixes Westerbeke heat exchangers a lot less expensively than
buying new ones. Westerbekes have zincs. He too was losing
By the way, what kind of engine do you have? The reason I ask is that a friend
of mine had a Westerbeke, and it turns out there is a guy who fixes Westerbeke
heat exchangers a lot less expensively than buying new ones. Westerbekes have
zincs. He too was losing antifreeze out the exhaust any
Double check the manual, for some reason I seem to think it is a 10 psi
cap. Other than that it is the same as any other automotive cap.
Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD
On Fri, Apr 5, 2019, 4:51 PM ALAN BERGEN via CnC-List
wrote:
> Is there anything special about the cap, or
AFAIK, the only thing 'special' about them is the pressure it takes to open the
valve against the spring--this value is probably pretty standard at so many
lbs/sq. in. but it would be listed for your engine somewhere.
My engine had a mysterious leak that I finally determined was a result of NO
Is there anything special about the cap, or can I just get one from an auto
parts store?
Alan Bergen
On Fri, Apr 5, 2019 at 1:38 PM David Knecht via CnC-List <
cnc-list@cnc-list.com> wrote:
> I second Charlie’s message. My overflow tank developed a crack and it
> took me a while to find the
I second Charlie’s message. My overflow tank developed a crack and it took me
a while to find the slow leak. Fixed it with a plastic glue/sealant and it has
been fine since. Dave
S/V Aries
1990 C 34+
New London, CT
> On Apr 5, 2019, at 2:55 PM, Charlie Nelson via CnC-List
> wrote:
>
>
Also be sure your overflow tank/fittings and the ‘radiator’ cap are both
working and have good seals.
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On Friday, April 5, 2019, Gary Russell via CnC-List
wrote:
You can't rule out a head gasket, either. Look for a milky
If it was head gasket you’d see it in the oil. If cap leaked you’d see it in
bilge or smell it. Heat exchanger hole just pumps it out with no tell tale
signs. Jerry
Sent from my iPhone
> On Apr 5, 2019, at 12:43 PM, Jerome Tauber via CnC-List
> wrote:
>
> Had same Problem on Beneteau 411
Had same Problem on Beneteau 411 and indeed there was a hole in the heat
exchanger so antifreeze got pumped out with raw water. Jerry
Sent from my iPhone
> On Apr 5, 2019, at 11:48 AM, Gary Russell via CnC-List
> wrote:
>
> You can't rule out a head gasket, either. Look for a milky
The cp is old. I'll replace that first. Thanks for mentioning that.
On Fri, Apr 5, 2019 at 9:19 AM Dennis C. via CnC-List
wrote:
> How old is the cap on the coolant system?
>
> Dennis C.
>
> On Fri, Apr 5, 2019 at 10:47 AM ALAN BERGEN via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>> Over a
I already ruled that out.
On Fri, Apr 5, 2019 at 8:50 AM Gary Russell via CnC-List <
cnc-list@cnc-list.com> wrote:
> You can't rule out a head gasket, either. Look for a milky substance in
> the engine oil.
> Gary
> S/V Kaylarah
> '90 C 37+
> East Greenwich, RI, USA
> ~~~_/)~~
>
>
>
>
How old is the cap on the coolant system?
Dennis C.
On Fri, Apr 5, 2019 at 10:47 AM ALAN BERGEN via CnC-List <
cnc-list@cnc-list.com> wrote:
> Over a period of time, I'm losing antifreeze from the engine. I haven't
> seen any leaks coming from any of the hoses or hose connections while the
>
You can't rule out a head gasket, either. Look for a milky substance in
the engine oil.
Gary
S/V Kaylarah
'90 C 37+
East Greenwich, RI, USA
~~~_/)~~
On Fri, Apr 5, 2019 at 11:47 AM ALAN BERGEN via CnC-List <
cnc-list@cnc-list.com> wrote:
> Over a period of time, I'm losing antifreeze
Over a period of time, I'm losing antifreeze from the engine. I haven't
seen any leaks coming from any of the hoses or hose connections while the
engine is running. Can anyone confirm that the likely cause is a leak in
the heat exchanger? The engine is a Yanmar 3GMf, 20hp model. How difficult
is
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