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
filters. Had mechanic
check primary and secondary fuel pumps. Had
injectors tested and one replaced.
who worked on it said the cooling
system inside the engine
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
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
Can you help?