Is it slowing down at all? If so, you may just not have "burped" the system
sufficiently when you replaced the coolant.Some cars were notorious for that,
which is some cases caused problems down the road.RonWild CheriC&C 30-1STL
On Sunday, October 7, 2018, 3:28:42 PM CDT, bwhitmore via CnC-List
<cnc-list@cnc-list.com> wrote:
Hello all,
1 have a 1994 C&C 37/40+ with a Yanmar 3JH2E engine. When I changed the
coolant last year, it seemed like about 12 oz less coolant went back in. Since
then. I've noticed the overflow tank seems to be dropping a little, and I've
topped it off 3 or 4 times. In total, I've probably added 16 to 32 ounces of
coolant. The exhaust exits the boat downward, so I don't get a good view of
the existing exhaust, but I'm not seeing evidence of steam as I would expect
if I had a head gasket leak. The oil looks fine. There's no evidence of oil
in the coolant. There's no evidence of coolant leaking externally ( ie orange
in the engine bilge). We get the boat off the dock 4 to 6 times a month, each
time motoring about an hour per trip (30 minutes out, and 30 minutes back in
after sailing. I've only owned the boat about 18 months, so there could have
been a preexisting condition.
Any ideas, and is there a way to figure out what is going on? Should I be
worried?
Thanks!
Bruce Whitmore
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