[C320-list] Engine/Fuel Issue with my 2001 Yanmar

[Paul Rickman]

On the list Bert.
 
Thanks.


________________________________
From: "BAdams3491 at aol.com" <BAdams3491 at aol.com>
To: C320-List at Catalina320.com
Sent: Monday, November 7, 2011 6:44 PM
Subject: Re: [C320-list] Engine/Fuel Issue with my 2001 Yanmar

It has to be air in the line.  Check all the fuel lines, fuel  filters, 
etc...that's the only thing it can be.

Bert
At Ease
#442


In a message dated 11/7/2011 5:29:24 P.M. Central Standard Time,  
ilove2sail at verizon.net writes:

This is  a known problem with some Yanmar installs.

I've had the Yanmar  checked by two mechanics and they found
nothing wrong. Once my 1999  starts it runs smooth, it continues
to run without fail. As long as it  gets started at least once every three
days, it does fine. But it can be  really hard to start if it sits for a 
week.
What I've learned to do is pump  up using the fuel pump on the engine,
pumping it really fast for several  strokes. It starts, it chokes but it 
runs
smoothly after a min. According  to one mechanic, there is no check valve
on my engine.  I've just  learned to live with it. 

Paul
Affinity 657
Bay Bridge  Marina
Chesapeake Bay,  Maryland


________________________________
From: Chris Burti  <clburti at gmail.com>
To: C320-List at catalina320.com
Sent: Monday,  November 7, 2011 12:11 PM
Subject: Re: [C320-list] Engine/Fuel Issue with  my 2001 Yanmar

I forgot to add...if you can pump up the fuel line with  a half a dozen
or so strokes on the pump on the Racor filter and the  problem goes
away until the engine has not been run for a few days...it is  almost a
certainty that the cause is one of the problems that I just  discussed.

On Mon, Nov 7, 2011 at 11:50 AM, Chris Burti  <clburti at gmail.com> wrote:
> These are symptoms of two common  ailments for C-320's with Yanmar
> engines of our  vintage. they  have been alluded to in the other
> responses.
>
> The  first, and most common, is that Catalina installed a check valve
> in  the return line and when these fail, they allow air to run up
> return  line to the injectors. Mack Boring posted a Yanmar tech
> bulletin  advising removal of the check valve and they at one time also
> offered  a kit (a bit pricey) to accomplish the repair. I am reasonably
> certain  that the the bulletin is in the Association website. If not,
> let me  know and I will see if I can resurrect it.
>
> The second common  problem is that there is a nickle crush washer on
> the upper bleed  screw at the front of the engine in the fuel line just
> before the  injectors...if this washer is over torqued, it will leak
> air...$1.00  replacement part.
>
> On Mon, Nov 7, 2011 at 6:05 AM,  <tjdames at comcast.net> wrote:
>>  All,
>>
>> I am hoping that someone has had a similar  experience and can provide 
me with some guidance. As of late I have been  having an issue with my engine 
(Yanmar - for my 2001).
>>
>>  When the issue began 3 weeks ago,  the engine started fine, ran for 
about  3 minutes, than sputtered and would not restart. When it stopped it  
sounded/behaved like a lawnmower running out of fuel.
>>
>>  My mechanic said it had to be "primed", which he did, and it ran fine 
for  ablut 30 minutes until he shut it off, and let it sit over night. The 
next  morning, the same thing happened, it ran for a few minutes and sputtered 
out.
>>
>> He now tells me that he suspects fuel is draining  back to tank through 
the fuel sytem and he is going to "install a check valve"  into the system. 
that will "hold fuel in system". Please note that half of my  current fuel 
is new this year, purchased very early in the  season.
>>
>> Has anyone ever had a similar experience and  does the mechanic's 
solution seem logical?
>>
>> I would  appreciate any thoughts!
>>
>> Thanks,
>> Tom  Dames
>> Whisper 708
>>
>
>
>
>  --
> Chris Burti
> Farmville, NC
>



--  
Chris Burti
Farmville, NC
NC
>



--  
Chris Burti
Farmville, NC