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 <[email protected]> > 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: > [email protected] > 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: [email protected] To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
