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

[Brad Kuether]

I agree with Bruce.

This reeks of "air in the system".  The Yanmar 2GM (My 3YM30 self bleeds so 
not a good example) on my prior boat did the same thing when I changed the 
fuel filters.  It would "sputter" and stop, which told me I had more 
bleeding to do.

If the machanic blead it, and it worked for a while, it likely is not a 
blockage, and almost has to be air.

Fuel NEVER runs back into the tank, by design.  The only way it can happen 
is if there is air leaking into the system.

Find the leak and get a new mechanic?  :)

-Brad, Mary, Monica, and Jarod
"Independence"
2004 Catalina 320 Hull 1006
Middle River, MD


----- Original Message ----- 
From: "Bruce" <bruceheyman at cox.net>
To: <C320-List at Catalina320.com>
Sent: Monday, November 07, 2011 6:26 AM
Subject: Re: [C320-list] Engine/Fuel Issue with my 2001 Yanmar


> Generally the only way that fuel can leak back is if air leaks in.  I'd 
> check all of the fittings and make sure they are tight and not leaking. 
> I'd  also check your filter to make sure it is not blocked or lose.
> Bruce
> Somerset 741 Dana Point
>
> Bruce Heyman
> (949) 289-8400
>
> -----Original message-----
> From: tjdames at comcast.net
> To: C320-List at Catalina320.com
> Sent: Mon, Nov 7, 2011 11:05:41 GMT+00:00
> Subject: [C320-list] Engine/Fuel Issue with my 2001 Yanmar
>
> 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
>
>