[C320-list] Trouble starting Yanmar 3GM

[Wandering Star]

Louis,
Jack is right.  Nigel’s book is the best and my first go-to.  I also recommend Clymer’s Guide to your Yanmar model. Super helpful.  But more importantly, I started with ZERO knowledge about diesel's and if I can learn how to do all this, through the help of this blog site, so can you!!

Sara
Wandering Star
Seattle 
2000/#707

> On Jul 7, 2024, at 4:48 PM, Jack Brennan via C320-list <c320-list at lists.catalina320.com> wrote:
> 
> Hi Louis:
> 
> Just don't ignore it for too long. Small problems can develop into big ones when you neglect them.
> 
> It sounds like you might be new to diesels. Don't get too intimidated about doing your own repairs. Everything I described can be done with a screwdriver and a wrench, with a hand drill for mounting a new Racor filter. The trickiest part is bleeding air from the line, which is not really tricky on a Yanmar.
> 
> A good way to prepare yourself is to buy Nigel Calder's book on diesel engines.
> 
> Jack Brennan
> Sonas, 1998 Catalina 320
> Tierra Verde, Fl.
> ________________________________
> From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of Louis Friedman via C320-list <c320-list at lists.catalina320.com>
> Sent: Sunday, July 7, 2024 6:52 PM
> To: C320-List at catalina320.com <C320-List at catalina320.com>
> Cc: Louis Friedman <loualfr at gmail.com>
> Subject: Re: [C320-list] Trouble starting Yanmar 3GM
> 
> Jack,
> 
> That may be more than I have time or the ability to do, might have to wait
> for fall to have the yard take another look.  thanks.
> Dan - just to clarify, you open the throttle before you crank the engine?
> and crank the engine with the throttle at 3/4 to half open?
> 
>> On Sun, Jul 7, 2024 at 5:04 PM Daniel Kolean via C320-list <
>> c320-list at lists.catalina320.com> wrote:
>> 
>> I had trouble cold starting too. Hull #498, same Yanmar. What works for me
>> is slowly open the throttle, pull it down, then put it back up to 1/2 to
>> 3/4 throttle, then crank and bring throttle down when it fires.
>> 
>> Dan Kolean
>> ENRICH #498
>> Sent from my iPhone
>> 
>>> On Jul 7, 2024, at 1:45 PM, r. scott via C320-list <
>> c320-list at lists.catalina320.com> wrote:
>>> 
>>> i had the exact same problem on hull 615. had a very slow leak on line
>> to
>>> fuel pump. one drop a week. racor pump primes   very well if fuel pump
>> is
>>> on wrong position on the cam
>>> 
>>>> On Sun, Jul 7, 2024 at 1:17 PM Louis Friedman via C320-list <
>>>> c320-list at lists.catalina320.com> wrote:
>>>> 
>>>> Hi all,
>>>> 
>>>> We have a 1999 320, previous owner had told me that the Yanmar when cold
>>>> would not start unless it was primed with the manuel fuel pump. He had
>>>> thought there might be a fuel leak.  I had our marina check it out(they
>> are
>>>> certified for Yanmar engines) - they could not find any leaks and
>> thought
>>>> it was fine. If the engine has been run within a day, it's fine. But
>> more
>>>> than that and it needs priming to get fuel in the line - any other
>> thoughts
>>>> on why this would be. Anyone have a similar issue?
>>>> 
>>>> Lou Friedman
>>>> s/v Miss Adventure
>>>> Hull #623
>>>> 
>> 
> 
> 
> --
> Louis Friedman, DO, FACP
> Woodbridge Medical Associates
> www.woodbridgemed.com<http://www.woodbridgemed.com>
> 732-634-0036