[AT] Leaking fuel fitting

charlie hill charliehill at embarqmail.com
Sat Jan 19 12:35:14 PST 2013


Tom I'm not saying pressure is required to push fuel through it but I am 
saying that some
restrict the flow of fuel enough to cause problems.  The pressure from the 
pump
renders that small restriction nil when the filter is used in the correct 
application.
This subject was exhaustively debated  on this list probably 10 years or 
more ago when someone
was having a problem with their tractor engine spitting and sputtering and 
running lean.
It turned out they had an inline filter on it that was intended for another 
application.
The advice from this very list was to remove that filter.   Maybe someone 
can find it in the
archives.

None of you paid a cent for my comments so take them for your use if you 
find them helpful.
If not ignore them.

Charlie



-----Original Message----- 
From: Tom
Sent: Saturday, January 19, 2013 1:39 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Leaking fuel fitting

In my experience, any filter that required pressure to cause fuel to flow 
through, was ready for the bin.
As for downdraft carburetors, the fuel pump is a lift pump rather than a 
pressure pump, there only to fill the carburetor bowl.
On the subject of copper fuel lines, I've never seen them as original 
fitments only as the result shadetree mechanical repair...

Tom

--- On Sun, 20/1/13, charlie hill <charliehill at embarqmail.com> wrote:

From: charlie hill <charliehill at embarqmail.com>
Subject: Re: [AT] Leaking fuel fitting
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Date: Sunday, 20, January, 2013, 5:01 AM

Larry think about it.  If you have a fuel pump pushing the fuel under
pressure the pump will force the fuel through the filter.
If it is a gravity flow system the filter CAN, if it's too small, restrict
the flow enough to affect the engine performance.
Updraft carbs on tractors are gravity flow systems.  Down draft carbs on
your cars or trucks have a fuel pump.
There may be cases where this is not true but it is in all applications I'm
familiar with.

Charlie

-----Original Message----- 
From: Larry Goss
Sent: Saturday, January 19, 2013 10:39 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Leaking fuel fitting

Am I missing something here?  How does the style of carburetor affect the
force of gravity between the gas tank and the engine?

When I was employed in small engine repair, we had to pay attention to the
style of fuel filter we installed, but the only criteria was whether or not
the product had a fuel pump.  I presume the difference is based on the
micron size of the filter element, but I have never bothered to check the
specs on the various ones to see if that really is the difference.

Larry


----- Original Message -----
From: charlie hill <charliehill at embarqmail.com>
To: Antique tractor email discussion group <at at lists.antique-tractor.com>
Sent: Sat, 19 Jan 2013 02:14:40 -0500 (EST)
Subject: Re: [AT] Leaking fuel fitting

I know what Roy is talking about.  There are some inline filters that are
designed for pressurized lines and they will not always gravity flow
enough fuel for an up draft carb but there are plenty out there that will.

Charlie

-----Original Message----- 
From: jtchall at nc.rr.com
Sent: Friday, January 18, 2013 10:54 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Leaking fuel fitting

Roy, we've added a lot of in line fuel filters to tractors and lawnmowers
with no problems. None of them were automotive filters (that I am aware 
of)..
Napa keeps a good selection of them. I have one tractor that has a sediment
bowl type filter with a replaceable filter. It looks better on a restored
tractor than a plastic in line filter. With that one you don't have to
convert to rubber lines. To the untrained eye it looks like it belongs on
the tractor.

John Hall


-----Original Message----- 
From: Roy Morgan
Sent: Friday, January 18, 2013 5:50 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Leaking fuel fitting


On Jan 18, 2013, at 9:05 AM, Cecil R Bearden wrote:

> ... The b est thing that
> ever happen ed years ago was when they came out with those in line
> fuel
> filters.  They stopped the vibration and filtered much better

Do I remember right that normal car fuel filters have too much
restriction, and we should look for the right kind to put on gravity
fed fuel systems?  The '51 IHC W-4 here, for instance?

Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!



_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at


_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at

_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at

_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at

_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at
_______________________________________________
AT mailing list
http://www.antique-tractor.com/mailman/listinfo/at 




More information about the AT mailing list