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

[Chris Burti]

I would suggest that just replace the crush washer...it is cheap
enough to do so just to eliminate the possibility.

On Mon, Nov 7, 2011 at 7:17 PM,  <tjdames at comcast.net> wrote:
> Thanks all for the great feedback. I will be down the boat again Thursday and this will give me plenty of things to look at..
>
> ----- Original Message -----
> From: Karl Mielenhausen <kmielen at suddenlink.net>
> To: C320-List at catalina320.com
> Sent: Mon, 07 Nov 2011 12:16:20 -0000 (UTC)
> Subject: Re: [C320-list] Engine/Fuel Issue with my 2001 Yanmar
>
> I agree with Bruce. Your Yanmar ran fine for 10 years the way it was
> engineered, why do you think you need a check valve now? Clearly something
> else has happened that your mechanic has not found (yet).
> Leaks on the pressure side of the lift pump should be obvious. The use of
> toilet paper wrapping potential leak points has been helpful as it is not
> always obvious where the diesel on your bilge pad has come from.
> The secondary filter and its 2 top fittings are the usual problems as well
> as the "banjo" fittings. I assuming here that both fuel filters have been
> replaced and are not the source of an obstruction.
> I would then check to make sure the lift pump is OK. Use the manual lever
> to work the pump and see if you can see good pressure (and no leaks).
> Some of my friends have put in a secondary electric pump in case the
> diaphragm pump fails at an inopportune time.
> If the pump built into the RACOR filter head has been used, make sure its
> handle is down and locked.
>
> Karl
>
> On Mon, Nov 7, 2011 at 6:05 AM, 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