I had to drill out the deposits in the little injection elbow once, then replaced it entirely a year later. Once it starts to plug, it accelerates. It's a cheap part, just replace it.
On 13 May 2013 12:00, Dennis C. <capt...@yahoo.com> wrote: > Pluggage at the small elbow where the cooling water enters the mix elbow > is common in older Yanmars. Remove the small elbow. Clean it and its entry > point to the mix elbow. > > More an irritation than a concern. > > My feeling is it's due to excessive idling and low rpm running. Push the > engine a bit harder. Rev it up in gear at the dock before shutting down. > > Dennis C. > > Sent from my iPhone > > On May 13, 2013, at 12:52 PM, "Don Jonsson" <dbjons...@shaw.ca> wrote: > > > Once, many years ago. I checked it when it overheated two years ago and > it > > was fine - i.e. the bit didn't come off of it. I didn't check it this > time, > > as when I cleared the knuckle the water was pumping fine and I was > running > > late in catching the ebb home. > > > > -----Original Message----- > > From: David Risch [mailto:davidrisc...@msn.com] > > Sent: May-13-13 10:47 AM > > To: Don Jonsson ; cnc-list@cnc-list.com > > Subject: Re: Stus-List Overheating due to plugged knuckle > > > > Don, > > > > Ever blow an impeller in years past? > > David F. Risch > > (401) 419-4650 cell > > > > -----Original Message----- > > From: Don Jonsson <dbjons...@shaw.ca> > > Date: Mon, 13 May 2013 17:44:51 > > To: <cnc-list@cnc-list.com> > > Subject: Stus-List Overheating due to plugged knuckle > > > > > > > > Hello all > > > > I have an elderly Yanmar 3GMD engine that is raw water cooled. It has > > plugged twice in the last two years where the water goes through a > knuckle > > into the mixing elbow. The first time (summer before last) was some > solid > > bit that had gotten stuck - how it got there I don't know. The last time > > (last week) was due to a tar like substance gumming up the knuckle. > Easy to > > clear and I was on my way, but is this a harbinger of something more > > serious. > > > > I took the mixing elbow off a few years back and cleaned it, guess it is > > time to do that again. > > > > Is the plugging coming from the exhaust and working its way into the > knuckle > > - for example unburned diesel? > > > > Thanks for any insight. > > > > Don > > > > > > _______________________________________________ > > This List is provided by the C&C Photo Album > > http://www.cncphotoalbum.com > > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > -- Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC
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