[C320-list] Yanmar issue

[amshd2 at aol.com]

Sounds like it could be a stuck valves. Could also be a problem with a crack head or a bad head gasket. 

Unless you have the right tools and and know how to take apart the top end of the engine you might consider calling the mechanic at this point.  


-----Original Message-----
From: JJ Morrison <sail-ability at sympatico.ca>
To: Catalina List <c320-list at catalina320.com>
Sent: Mon, Mar 24, 2014 2:10 pm
Subject: Re: [C320-list] Yanmar issue


With exhaust coming out the air intake it sounds as if there is an air intake 
valve not closing completely on the compression stroke. This would also result 
in difficult starting. My engine has a thousand hours on it and even around zero 
degrees C; 32 degrees F it starts fairly easily.CheersJohnM1999#574

> From: cdescher at cedtulsa.com
> To: C320-List at Catalina320.com
> Date: Mon, 24 Mar 2014 14:16:29 +0000
> Subject: [C320-list] Yanmar issue
> 
> I've got hull #500 with 700 hours on the Yanmar.  I've never had a problem 
with it until the last two weekends.  The engine is probably around 40 degrees, 
so it takes some cranking to start.  When it does start it's really rough, and 
the cabin fills with smoke.  It's bad.  What I discovered yesterday is that when 
it first starts, it's blowing exhaust out of the intake.  I turn it off and try 
again a few minutes later and it runs normally.  My hope is that this is 
temperature related and with warming weather it will go away.  Any ideas?
> 
> Chris Descher
>