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Engine and Drive Train / 3GM30 loses power
« on: June 24, 2014, 05:26:05 PM »
I was motorsailing, turning about 2000 RPM on a Yanmar3GM30. Suddenly, the engine lost power. It wasn't exactly missing but it wasn't delivering power. I shut down and restarted but with the same symptoms and then wouldn't run at all. A few days later, it started right up and ran with no problem. The same thing had happened a earlier, maybe 50-75 motor hours earlier. Any thoughts?