[C320-list] Fuel hose feed to injectors

[Jack Brennan]

Dennis:

I checked on my engine. I too have a hose in that spot. Mine is a 1998 Yanmar 3gm30. It leads from the secondary filter to what appears to be injectors, although I haven’t dug into the manual to confirm that. With the paint on it, you can be sure it’s original.

I would take the hose into any shop that sells fuel lines. It looks to be standard. I also wouldn’t worry too much about the hose. They’re pretty tough, and it doesn’t take a huge amount of effort to remove one, in my experience. (I just replaced my fuel lines from the tank to the fuel pump.)

Jack Brennan
Sonas, 1998 Catalina 320
Tierra Verde, Fl.






Sent from Mail for Windows 10

From: Dennis Cookson
Sent: Wednesday, August 12, 2020 3:48 AM
To: C320-List at catalina320.com
Subject: Re: [C320-list] Fuel hose feed to injectors

Thanks Tim, that’s interesting. I don’t want to pull the old hose off until I’m sure I have a new one ready to fit, as I expect it will crack and be unusable.  No other advice on this one as yet!

Regards,
Dennis Cookson
#577

> On 11 Aug 2020, at 19:23, Timothy Woods <woodstimothya at gmail.com> wrote:
> 
> Sorry if I'm late, been out sailing.
> 
> That's the first time I've seen a hose there. Mine is metal pipe.
> 
> Tim #375
> 
> On Sat, Aug 8, 2020, 10:00 AM Dennis Cookson <dennis at cooksons.net> wrote:
> 
>> I need to replace some of the rubber fuel hoses on our Yanmar 3GM30F which
>> are showing signs of wear and are likely original.  One of these is the
>> line from the secondary filter to the injectors. This hose, seen in this
>> photo <
>> https://c320.org/mediagallery/media.php?f=0&sort=0&s=2020080813461490>
>> has quite a narrow diameter but the new hose I’ve bought is much fatter due
>> to better reinforcement, with an approx 17mm diameter. It looks like the
>> replacement would foul on the injector fixings. I’m wondering if anyone
>> here happens to know the max. diameter I could fit.
>> 
>> My understanding is that the hose inside diameter needs to be 5/16” or 8mm.
>> 
>> Dennis Cookson
>> #577.  1999
>> 
>> 
>>