Josh How many hours on the engine?
Tom Buscaglia S/V Arera 1990 C&C 37+/40 Vashon WA P 206.463.9200 > On Apr 11, 2014, at 5:40 AM, [email protected] wrote: > > Message: 13 > Date: Fri, 11 Apr 2014 05:18:20 -0400 > From: Josh Muckley <[email protected]> > To: "C&C List" <[email protected]> > Subject: Stus-List Yanmar 3HM35F low compression > Message-ID: > <CA+zaCRDWAHmGARS=ybct2ffudzpm3yscqnqaaztdl6xxjsl...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hey folks, > > It appears that I have low compression (130psi and 160psi) on 2 cylinders. > During the first start of the season the engine started rough and powered > the boat just long enough to get to the travel lift and then stalled when I > throttled down. I did not attempt to restart because I was in the lift > well. Upon relaunch, 5 days later, the engine just won't catch. It kinda > acts like it wants to, which I assume is the single cylinder that has > enough compression to fire. > > An additional symptom was unusually high crankcase pressure as indicated by > the dipstick that ejected from the engine. A zip-tie was enough to secure > it for the trip to haul-out. > > I have ensured fuel and spray pattern. Changed and cleaned injectors. > Tried starting fluid. Attempted to use hot air at the air intake. > Cleaned/removed air cleaner. Checked valve lash/operation. Checked > exhause elbow. Checked compression. > > Stuck rings seem to be the most common diagnosis. Any thoughts or > suggestions would be appreciated. > > I think the bigger decision for me and the question for y'all is, what > should I do from here. Rebuild? Replace? If I replace should I modernize > or stick with a remanufactured 3HM35? If I modernize, should I stick with > 30hp or go for something bigger. I fear that anything other than a 3HM35F > will cause delays due to configuration and fit. Is it worth it or is that > fear unfounded? If I rebuild should I do it myself? I fear a long > turnaround and more delays. > > As you can probably tell I am leaning towards replacing with a > remanufactured 3HM35F but I also don't want to miss other opportunities. > > Thanks, > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Yanmar 3HM35F > Solomons, MD _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
