[C320-list] Yanmar 3GM issues

[Louis Friedman]

thanks all.  I recruited someone more experienced than me at out club(not
hard to do!) and it turned out to be a loose nut at the point the fuel hose
enters the secondary fuel filter.  Seems to be running good now but I need
to clean up a pile of diesel fuel today!

Lou

On Sun, Jul 14, 2024 at 9:20 PM Louis Friedman <loualfr at gmail.com> wrote:

> thanks all. lots of good advice here.  I will take a look this  week. We
> were heeling a bit today so I wonder if some crud did get in the fuel line.
>
> Lou
>
> On Sun, Jul 14, 2024 at 6:33 PM Bob Borelli via C320-list <
> c320-list at lists.catalina320.com> wrote:
>
>> When I have trouble starting my M30 engine,
>> And need to continuous turning over hoping to start
>> I remove the drain plug on the Aqua Filter (9/16" wrench)
>> So I can turn the engine over at 30 second or more intervals
>> with no worry about back filling the exhaust hose, elbow, exhaust manifold
>> which would be a very serious error!
>> Easy to pump water out of the bilge & return drain plug to Aqua Filter.
>> When lucky enough to have solved hard to non start problem.
>> To date my problems have been air leaks & a brand new dirty primary
>> filter from debris stirred up from bottom of tank.
>> I've have had a work request to polish the fuel with hope to get the
>> bottom debris out of the tank.
>> And I keep several spare primary & secondary filters onboard for the next
>> unexpected time diesel fades or hard to start.
>>
>> I'm thinking of replacing the 3 injectors with new from Part4Engines
>> instead of sending to shop for test and rebuild.
>> M30 has  1650 engine hours.
>>
>> Bob  1995 C320 no. 209  moored on the Sassafras
>> ________________________________
>> From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of
>> Jeff Smith via C320-list <c320-list at lists.catalina320.com>
>> Sent: Sunday, July 14, 2024 6:11 PM
>> To: C320-List at catalina320.com <C320-List at catalina320.com>
>> Cc: Jeff Smith <svsailmates512 at gmail.com>
>> Subject: Re: [C320-list] Yanmar 3GM issues
>>
>> How many hours on the engine? This is how many problems started on my
>> Perkins with approx. 1,150 hours. After much troubleshooting, I had my
>> injectors and injection pump rebuilt (not at the same time). That solve
>> the
>> issue.
>>
>> The advice the shop gave me was to start with a clean container of diesel
>> and work backwards from the injection pump. It is probably with changing
>> the two filters first (approx. $50), before you start taking fuel lines
>> loose and plugging them into the clean tank of diesel. However, this
>> method
>> is how I diagnosed my issue.
>>
>> I also installed ann electric fuel pump. I simply turn it on after
>> changing
>> the filters. It usually eliminates the need to bleed the system, or it
>> makes bleeding extremely easy.
>>
>> Good luck,
>> Jeff
>> #121
>>
>> On Sun, Jul 14, 2024 at 4:51 PM Louis Friedman via C320-list <
>> c320-list at lists.catalina320.com> wrote:
>>
>> > Hi all, looking for thoughts here- went out for a sail today -engine
>> took
>> > a lot of priming to start but then was fine. After 2 hrs sailing it
>> > wouldn’t turnover despite more priming. Had to sail it into the mooring.
>> > Someone suggested  maybe a fuel line clog or I need to change the
>> primary
>> > fuel filter? Both fuel filters were changed upon launching in May-
>> would it
>> > make sense to change again ?  Picked up Nigel Calders book on diesels
>> but
>> > still learning.
>> >
>> > Lou
>> > S/v Miss Adventure
>> > #623
>> > Sent from my iPhone
>>
>
>
> --
> Louis Friedman, DO, FACP
> Woodbridge Medical Associates
> www.woodbridgemed.com
> 732-634-0036
>
>

-- 
Louis Friedman, DO, FACP
Woodbridge Medical Associates
www.woodbridgemed.com
732-634-0036