Hi,
I have a
Yanmar 2QM15 that stalls out on occasion. It seems to be at random
times. When it happens it slows down as if someone hit the throttle lever and
then dies. I can usually restart it after waiting a few minutes. Sometimes it
will only run at idle or low
RPM after these episodes.
What I have done so far. Replaced
fuel lines from tank to
engine. Replaced
fuel filters. Had
mechanic check primary and secondary fuel pumps. Had
injectors tested and one replaced.
One
mechanic who worked on it said the
cooling system inside the
engine was
really corroded and he thought the
cooling system was failing due to being
clogged. and the engine was stalling due to over
heating. It did seem like
that was the issue once, as the engine stalled and seemed very hot.
The last stall-out just happened this weekend after motoring for about 2 hours
on a river. The engine didn't seem that hot to me. I could put my finger on
the
head for a few seconds without getting burned. And
water was still coming
out the
exhaust.
I've owned the
boat for 5 years, had multiple mechanics look at it and no one
has
solved the problem.
Can you help?
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