deanmcneill
New member
Just bought a C&C34 with a 2009 Yanmar 3YM30 installed. Purrs like a kitten, but we just sailed boat a 30 hour slog through some heavy seas. Decided to motor-sail a bit in some heavy seas and engine, at 2500-2800 rpm, would suddenly lose revs then often quit. Would start up again in a few moments, but would do it again in 5 minutes or so. Gave up on it until winds died down and started it up no problem... worked flawlessly for a 2 hour motor in calm waters after that. Boat was fully serviced in fall and on hard until 2 weeks ago when I bought and launched it. Has a Racor filter/water separator and inline fuel filter. I'm wondering if the exhaust being under water during that point of sail would cause the issue or maybe I should just change up filters, or was it probably sediment in tank being kicked up and starving the engine?