I’d also pull the fuel pick tube and see if there is a screen in the end of it, if there is one remove it - it’s likely picking up sediment and starving the engine, dropping ir when the engine stops.
If it that or the filters I would either polish the fuel, and add a cleaner, or remove it and have the tank cleaned. Paul ________________________________ From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Dean McNeill via CnC-List <cnc-list@cnc-list.com> Sent: Saturday, September 5, 2020 2:19:50 PM To: Steve Thomas via CnC-List <cnc-list@cnc-list.com> Cc: Dean McNeill <d...@deanmc.ca> Subject: Stus-List Yanmar cutting out at sea? Just brought my new-to-me C&C34 home. My 2009 Yanmar 3YM30 purred like a kitten in most seas. But this was a 30 hour slog through hell. Decided to motor-sail a bit in some heavy seas (20-25 kts), engine, at 2500-2800 rpm, would suddenly lose revs then often quit. Could 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? Thoughts? Dean _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray