I have/had a similar issue. 3GM30 Left 1 week or longer it was hard to start. When it did finally start it first started to fire on 1 or 2 cylinders. Lots of black smoke etc after. Then runs smooth. The less days between starts easier starts. Even 1 day would be an instant start. On Oct 5 and the time before Sept 21 I had instant start. 14 days and the time before was longer. I was really surprised by it especially the 5th as the temp was around 20C. My battery isnt the issue. I think this behavior started after I changed filters and bled the lines but not positive. It was done in 2015. One of last sails before this stopped was a hard sail in gusts 20k true. Close hauled and heeled over N2 and full main. Not sure whats going on. Thinking I stirred things up in the tank.
Garry Cross 1974 CC35 CBYC Toronto > ---------- Forwarded message ---------- > From: Jake Brodersen <captain_j...@cox.net> > To: <cnc-list@cnc-list.com> > Cc: > Date: Sat, 8 Oct 2016 12:57:01 -0400 > Subject: Re: Stus-List Yanmar diesel > > Tom, > > > > Running a diesel like that under no-load conditions won’t help it much. Running it at the slip in gear would provide some load to the engine and be more beneficial. We usually have a 45 to 60 minute motor to the race course, which helps keep the engine in top shape. I usually set it at 2,800 rpm and keep it there. Always idle it for a few minutes before shutdown too. This will help cool down the internal parts before you shut it down. > > > > Jake > > > > Jake Brodersen > > C&C 35 Mk-III “Midnight Mistress” > > Hampton VA > > > > > > > > > > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Tom Buscaglia via CnC-List > Sent: Friday, October 7, 2016 13:18 > To: cnc-list@cnc-list.com > Cc: Tom Buscaglia <t...@sv-alera.com> > Subject: Stus-List yanmar diesel > > > > The black smoke may indicate excessive carbon buildup. If you don't have three hours to run it is, next time you bring her in while the engine is still running out it in neutral and run it up to 90% of max RPM for about 5 minutes. > > Tom Buscaglia > > S/V Alera > > 1990 C&C 37+/40 > > Vashon WA > > P 206.463.9200 > > C 305.409.3660 > > > > >
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