[C320-list] Fuel Return Line Check Valve

[Robert E. Sloat]

There was detailed explanation of the problems with a faulty check valve in 
the fuel return line for Yammar 3GM30F a few years ago by Jeff Church who 
has graduated to a C38.5.  I believe it had to do with hard starting.  I 
could not find it in the C320 website or in my data base.  A few articles 
turned up in a Google search:  yanmar engine fuel return line check valve. 
Torrenson has something on this issue.


Bob Sloat
Savannah Hull 894
----- Original Message ----- 
From: <bruceheyman at cox.net>
To: "Catalina List" <C320-List at Catalina320.com>
Sent: Saturday, June 19, 2010 9:33 AM
Subject: Re: [C320-list] Fuel Filter


> Chris,
> First I've heard of this but it would explain why the boat can be hard to 
> keep running when we first start it up after a month of not using it.  Why 
> are you recommending removing it verses repairing it?
> Thanks,
> Bruce
> Somerset 671 SoCal
> Sent via BlackBerry by AT&T
>
> -----Original Message-----
> From: Chris Burti <clburti at gmail.com>
> Date: Fri, 18 Jun 2010 16:27:54
> To: <C320-List at catalina320.com>
> Subject: Re: [C320-list] Fuel Filter
>
> Changing the fuel filter is a good idea.
>
> There is also a recurring problem with the fuel systems in our generation 
> of
> boats. There is a check valve in the fuel return to the tank. If and when
> this valve fails, it permits air to work back up the return to the
> injectors. The check valve should be removed. Until it is, you can run a 
> few
> strokes on the lift pump in the Racor filter separator and it will solve 
> the
> problem until the engine goes without for a few weeks.
>
> On Fri, Jun 18, 2010 at 2:09 PM, Joseph Aberdale 
> <summerwind3 at comcast.net>wrote:
>
>> My Yanmar engine 3GM30F in my 2002 Catalina died while underway.  I'm 
>> going
>> to change the fuel filter to determine if that's the problem. Is there a
>> fuel shut off valve I need to close before changing the filter and where 
>> is
>> it located?  How does the filter housing come apart to change the filter?
>>
>> Thanks very much in advance for your help. It's appreciated.
>>
>> Joe
>>
>> #908
>>
>
>
>
> -- 
> Chris Burti Farmville, NC
>