[C320-list] Diesel/exhaust smell in odd places

[pat reynolds]

Ted,  When I replaced my muffler, Catalina Parts Dept.  emailed me several photos of mufflers they made and I was able to pick the replacement out  

    On Monday, August 15, 2016 9:32 PM, Ted Harrison <tharrison at innovations-plus.com> wrote:
 

 Greg, I have a couple of questions.

Would you be willing to share your diagrams and pictures sent to CY? If so please send. 

Did you put screws in the four corners ? 

Did you change the location of the drain? 

Thanks Ted 



Ted Harrison

> On Aug 15, 2016, at 9:42 PM, Greg Flanagan <greg.flanagan at shaw.ca> wrote:
> 
> I have some experience to add on this topic. I just finished replacing my muffler after using the leaking one for all of last season and the start of this one. I had water leaking and all of the smells that Graeme has noted. I did not want to put my boat out of commission last year for the sailing season and ordered a new muffler from Catalina Yachts and had it aboard if things got too severe.
> 
> First I stopped the auto bilge pump so I could see how much water was coming in and then pumped it out in manual. The amount of water per day gradually increased. Second, I got a carbon monoxide detector for the aft cabin. Although the smell was there the alarm was never triggered. 
> 
> This Spring I went to install the new muffler. Although it looked the same it was substantially different and could not possibly work. I contacted Catalina. They were stellar, especially Len in parts. I was going to ship them my old muffler so they could match it. Three problems. It was going to cost ~ $300Cdn to ship it. It was going to take weeks, and I would not be able to use the boat. So I worked up detailed drawings/pictures of the old muffler and emailed them to CY, and I put the old muffler back in and used the boat. With Len's help they built me a new muffler exactly the same as my old one. They had it ready and shipped in a week. It fit perfectly and works great. And best of all they did not charge me anything additional to my original purchase.  And notably all of the smells are gone. 
> 
> One note. I installed the new muffler with self adhesive marine weather strips in the bottom edge of the muffler, where otherwise fibreglass meets fibreglass. I believe this will reduce the vibration that may wear these mufflers out. Also the engine seems much quieter. And not a drop in the bilge!
> 
> Cheers,
> 
> Greg 
> Hoop Dancer #1076
> Sidney, BC 
> 
>> On Aug 15, 2016, at 1:08 PM, Graeme Clark <cg at skyflyer.co.uk> wrote:
>> 
>> After the engine has been running we notice a diesel-y exhaust-y smell in aft cabin and also under the galley sink when you open the door or a drawer
>> 
>> I know the exhaust is not leaking this side of the muffler. Could it be a water leak from muffler or the actual exhaust hose? This would run down to bilges past the galley area I think
>> 
>> Does "exhaust cooling water" pick up the smell like this?
>> 
>> Or are all boats the same?
>> 
>> Graeme
>> #366 Jaskar
>> 
>> Sent from mobile: please excuse typos etc.!
>> 
>>