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Exhaust smell in bilge 2012 Monsoon 350


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Sharpag01

Its minor but I’ve been smelling exhaust fumes coming from the bilge under the helm near the sub and also in the engine compartment.  I tightened and replaced some of the hose clamps on the wet exhaust hoses but it didn't help.  Could there be another source for this smell?  Stuck PCV valve or something?  I plan to pressurize the exhaust hoses with a shop vac at the surf pipe and spray soapy water on all the joints and check for bubbles.  Other ideas?  

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BlindSquirrel

Or do that soapy water exercise while it's running? Not sure how well the reverse air would work.

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Not sure you'll find anything that way.

 

The exhaust joints are fairly large, i'd run my hand over all the joints while the motor is warming up.

Also, check your mufflers for damage.  The mufflers are a common failure points for cracking, etc.  Although, they are wet, so you'll see water coming out too.  

 

Good luck.  

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Sharpag01

Found it leaking at the port stainless exhaust dump joint at the cat.  Gasket or RTV?

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