Earlier someone recommended a thorough check for clogs in the system first. I would second that advice. Thought I had an elbow or water injector problem once but it turned out to be a partial sea water clog that was entirely confined to the hose barb going in to the sea water strainer. Couldn't see it. Took off the hoses, took off the bowl, all seemed ok. Thermostat was stuck, so I ordered a new one. The top part of the strainer was secured to the boat, and I didn't take it off until much later, which made the problem relatively easy to see. Partial flows can be deceptive.
Steve Thomas C&C27 MKIII -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com]On Behalf Of jim aridas Sent: Tuesday, September 11, 2012 3:31 PM To: capt...@yahoo.com; cnc-list Subject: Re: Stus-List Yanmar question Humm, knew we would get at least one witty response. Thank you all for the info. Figured it sounded like constricted flow. Gonna get the elbow and nipple replacements first. Then pull it apart and replace them. Agree no sense putting back the old ones. thanks again, Jim Galaxy 34' -------------------------------------------------------------------------------- Date: Mon, 10 Sep 2012 20:11:19 -0700 From: capt...@yahoo.com To: cnc-list@cnc-list.com Subject: Re: Stus-List Yanmar question Jake wrote: "I always check the nipples first!" <snip> I'm a leg man myself. Dennis C. ------------------------------------------------------------------------------ From: Jake Brodersen <captain_j...@cox.net> To: cnc-list@cnc-list.com Sent: Monday, September 10, 2012 7:06 PM Subject: Re: Stus-List Yanmar question Jim, There are ample opportunities for problems in the raw water cooling system. The easiest to check is the nipple on the exhaust elbow. If it was installed with some never seize lube, it should be easy to remove and check. They do tend to gum up with salt deposits from time to time. I always check the nipples first! The next most likely suspect would be a clogged exhaust elbow. I have removed mine in the past and cleaned it out with a coat hanger. No pretty, but it may buy you a year or two. Replacement is the best course of action, especially since you have it off already. I removed my heat exchanger and had it hot tanked a number of years ago. It wasn’t in bad shape, but now I feel better about it. Good raw water flow will keep your exhaust quiet. That’s how I can tell my system needs attention, by the change in sound. I switched from the SS stock muffler to a smaller fiberglass muffler a couple years ago. It sounds great. Not loud, but nice an mellow. Jake Jake Brodersen C&C 35 Mk-III "Midnight Mistress Hampton VA _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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