But.... If it's the original elbow, I suggest replacing it. It's not pretty when the side falls out of it due to corrosion and your boat slowly fills with exhaust gas and dirty water.
Rich > On May 20, 2014, at 21:12, "Dennis C. via CnC-List" <cnc-list@cnc-list.com> > wrote: > > Common issue with Yanmars. Soot builds up in the mix elbow. Pull the mix > elbow and clean it. Should be 4 nuts. > > Dennis C. > Touché 35-1 #83 > Mandeville, LA > > Sent from my iPhone > >> On May 20, 2014, at 5:17 PM, Dave Lane via CnC-List <cnc-list@cnc-list.com> >> wrote: >> >> Well, as things usually go, something that worked in the fall doesn't in the >> spring. >> >> The engine starts but no cooling water flows out the exhaust - I did not >> need to find this out on launch day! >> >> Anyway, this is a C&C 29-2 with 2GM-F engine. I diagnosed it and it's fine >> all the way to and including the raw water out of the heat exchanger. When I >> blow into the hose going into the u-shaped exhaust mixer, it's plugged. The >> engine exhaust itself seems fine. After it goes through the mixer, there is >> about a 2" ID hose to the muffler then another 2" hose to the stern port. >> >> This problem may have been getting worse as the years went by as last year I >> was thinking the water flow was not as much as previous years. >> >> Questions: >> >> 1. Is it likely that the blockage is in the mixer? Any suggestion for what I >> should try next? >> 2. The mixer has a right angle elbow going into it - should I try to remove >> it? Or stick I wire in it to try to unclog it? >> 3. In order to motor "slowly" home (a few miles) from the marina, I made a >> run to Canadian Tire for "stuff" and I plugged the exhaust water input to >> the mixer and made a temporary hose from the heat exchanger that I could >> feed out of the cockpit locker and over the side (the water flow was great). >> Can engine be run without water flowing through the muffler? (ie. does it >> depend on water cooling?) >> >> Thanks in advance, >> >> Dave >> St. Margaret's Bay, NS >> "Vela" C&C 29-2 >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> >> Email address: >> CnC-List@cnc-list.com >> To change your list preferences, including unsubscribing -- go bottom of >> page at: >> http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of page > at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
