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Old 04-19-2012
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Re: Rebuilding Yanmar 3GM30F; need advise $?

enjoying this thread.

I will be doing the same thing with my Yanmar 4JH2E. Only 1,000 hours, but sat idle for 10 years and overheated pretty bad by running without water flow for about 20 minutes.

It took me around FL (through the Okeechobee Waterway) without any real problems. The problems were easy to identify: bad mounts, hoses need replacements, very dirty fuel tank; but nothing serious. No smoke or anything out of the exhaust.

My biggest worry is what may have happened when it ran hot. The engine is currently pulled, so I'm unsure how I would get it tested.
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