[C320-list] Yanmar starting problem

[millers1 at aol.com]

Bob,  interesting problem.... I suspect your engine  newer and not part of the problem. Mine is piped as shown modified....
       Click on 1st link in para.2 below...... then on hard starting......
A



-----Original Message-----
From: Brian Borchers <slaintec320 at gmail.com>
To: C320-List <C320-List at Catalina320.com>
Sent: Mon, May 23, 2016 5:09 pm
Subject: Re: [C320-list] Yanmar starting problem

Bob,

This was a very common problem with Yanmars produced in late 90’s, I do not recall the exact time line.  However, there is a Service Bulletin posted not the Catalina 320 Association web page about the issue.  I had a similar problem and it was an easy fix once identified.  Hope this helps:


2.  Yanmar Service Bulletin - Hard Starting <http://www.catalina320.com/filemgmt/index.php?id=75>
After sitting for a week or so my engine would crank for a long time before starting. The problem was getting a little worse each year. Mack Boring suggested that I make this modification to the fuel lines. Now the engine starts almost immediately. (Jeff Church)
by Karl Mielenhausen <http://www.catalina320.com/users.php?mode=profile&uid=709> on 10/14 01:16PM - FileMgmt <http://www.catalina320.com/search.php?query=yanmar+starting+&keyType=all&type=filemgmt&mode=search> - 332 Hits

You will have to go to the web site and open the above link and download the PDF file from Mack Boring.  

Brian Borchers
Slainte #609

> On May 23, 2016, at 3:30 PM, Chris Burti <clburti at gmail.com> wrote:
> 
> Bob,
> The "crush" washer in the upper bleed screw port, just before the injectors
> is made using a nickle alloy that is intended to be soft enough to form a
> seal when tightened. If it is over-tightened or if it has been replaced
> with a stainless steel washer, it can cause the symptoms that you describe.
> It is cheap enough to try replacing it before pulling the injectors.
> 
> Fair winds,
> Chris Burti,
> Commitment, #867
> Washington, NC
> 
> Chris Burti
> Farmville, NC
> 
> 
> On Mon, May 23, 2016 at 3:07 PM, Robert Dean <robrtdean at yahoo.com> wrote:
> 
>> I have hull 550, it's a 1998 with a Yanmar 3GM30. Last fall it became hard
>> to start after it sat for a few days. Once it started it ran a little rough
>> for a minute or two than ran fine. After it ran it would start with just
>> the touch of the starter button.If it sat for a few hours it would still
>> start right up. It is getting air in the fuel lines some how.Over the
>> winter I did away with the check valve on the fuel line at the injector
>> pump per Yanmar service advisory 11-1-2000.  I replaced the Racor filter
>> element and gaskets and the Yanmar filter element and o-ring. I replaced
>> the fuel hose from the tank to the Racor  and from Racor to the lift pump,I
>> also replaced the line that goes around the dipstick. I replace all the
>> copper seals.Everything is new from the fuel tank to injector pump,but I
>> still have the same problem. I had a mechanic look at it,he couldn't find
>> any leaks. The mechanic did say it might be an injector leaking. Before I
>> go to the expense of replacing injectors, I thought  I would ask if anyone
>> else had this problem.
>> Bob DeanJust Chillin 550Worton Creek
>>