I discovered that the radiator cap on the after market heat exchanger
was worn and allowing anti-freeze to escape when the engine heated up.
Replaced the radiator cap with a new one and it seems to have solved
that problem. I too had drain valves that would mysteriously open.
Solved that problem first, but the problem persisted and found the
radiator cap issue. Gremlins pop up in many places.
------ Original Message ------
From: "robert via CnC-List" <cnc-list@cnc-list.com>
To: cnc-list@cnc-list.com
Cc: "robert" <robertabb...@eastlink.ca>
Sent: 5/24/2015 9:24:58 PM
Subject: Stus-List Antifreeze Mystery
John:
Thank you ....both good tips...your first one could be the culprit but
your second one could also be the culprit.....the antifreeze (Preston)
is approx. 8 years old....I will flush and replace it before Fall layup
and see what happens. As I said earlier, it does not happen after
launch and before haul....just during the cold of winter.
A few years back, one of the engine block antifreeze drain valves came
loose during the sailing & motoring season which was noticed when
antifreeze entered the bilge....a little stress until the loose valve
was detected. Some times we get lucky!
Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
On 2015-05-24 3:33 PM, John Russo via CnC-List wrote:
Check to insure your engine block drain valves are tight before winter
storage. Second thought is weird but offered anyhow. Is antifreeze
fresh?
Could there be a blockage somewhere where the antifreeze is diluted
and
freezes which would expand and force the top stuff out somehow. I said
it
was a weird thought! I will discuss it with the mechanic at the yard
who is
pretty sharp and seen most things.
John
C&C 32
Arpeggio
-----Original Message-----
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of
robert
via CnC-List
Sent: Sunday, May 24, 2015 11:25 AM
To: cnc-list@cnc-list.com
Cc: robert
Subject: Stus-List Antifreeze Mystery
After the engine is winterized in the Fall, I place a plastic pan
under
it.....not sure why but I do. Every Spring, there is approximately a
half a
cup or 250 ml of antifreeze in the pan.
I have looked everywhere for the source of this antifreeze but I can't
find
out where it is coming from. The boat was launched 3 weeks ago, the
engine
has about 3 hours on it since then, the pan is still under the engine
but
there is no antifreeze in it. And the antifreeze does not appear
during the
sailing season.
I notice every Spring the level of the antifreeze in the 'overflow
container' is down a bit and I refill to the 'FULL LEVEL' but that
container
is not leaking. It's a mystery!
Anybody experience this and/or have any ideas where this antifreeze
could be
originating from?
Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
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