It is not a big job and most the the time you can re-use the gasket.First remove the exhaust hose while the mixing elbo is still on the engine. A heat gun and gloves will help.Then remove the water injection hose then the elbow. They do clog and can be cleaned a few times before replacement. Sorry, I do not know the tolerances. I have cleaned mine twice on my 3GM30 that has 1000 hours on it.
-------- Original message -------- From: Syerdave--- via CnC-List <cnc-list@cnc-list.com> Date: 09-04-2016 4:53 AM (GMT-08:00) To: C&c Stus List <cnc-list@cnc-list.com> Cc: "syerd...@gmail.com" <syerd...@gmail.com> Subject: Re: Stus-List Loud Yanmar 2gm - like open exhaust? Thanks gentlemen. Trouble a' brewin'..... Message: 6 Date: Sat, 3 Sep 2016 19:39:45 -0700 From: Jim Watts <paradigmat...@gmail.com> To: 1 CnC List <cnc-list@cnc-list.com> Subject: Re: Stus-List Loud Yanmar 2gm - like open exhaust? Message-ID: <ca+jz0fdjr4p-yip1aem4sv3brqpvzc2a8qmk86stsp_7rdh...@mail.gmail.com> Content-Type: text/plain; charset="utf-8" Definitely low or no water flow. Drilling out the water injection elbow that connects to the exhaust elbow might buy you some time. Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 3 September 2016 at 18:19, svpegasu...@gmail.com via CnC-List < cnc-list@cnc-list.com> wrote: Sounds like a partially plugged mixing elbow, or maybe something blocking thr raw water someplace. Could also be a bad impeller. Doug Mountjoy svPegasus LF38 #4 just west of Ballard, WA. ------ Original message------ *From: *Syerdave--- via CnC-List *Date: *Sat, Sep 3, 2016 17:37 *To: *C&c Stus List; *Cc: *syerd...@gmail.com; *Subject:*Stus-List Loud Yanmar 2gm - like open exhaust? This just started happening this weekend. When first started and idling the exhaust is noisy - like an open exhaust, maybe no water. Run it for a bit at higher rpm, and suddenly it quiets down and sounds normal. Next cold start, same thing. Did a quick check of the raw water strainer underway, and there was some stuff in there, but water was being sucked through. Is the mixing elbow clogging? Haven't had that off yet... Thanks all!Dave._______________________________________________This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
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