The Ford Barn

jimTN · 11-07-2021, 03:41 PM

New valve, 29-early 31 style. Leaking thru to the carb. when shut off. Suggestions? Is there a spring in there to make the valve seal, it seems to turn very easy.

Certimafied · 11-07-2021, 04:29 PM

I’m not sure if yours is constructed the same, mine was a brass on brass seal. Basically like a ball valve. There is a spring in there that keeps tension on the two parts that is important as well as the correct amount of tension. I went in and polished the stationary part and the moving part attached to the handle. You can even use some sort of compound to lap the two pieces together to make a real nice machined surface between the two. I ended up using just some aggressive metal polish for the lapping. I suppose a purpose made lapping compound would work better, however I achieved a real nice working product at the end.

It’s sounds like the spring inside may be broken or collapsed for some reason.

old ugly · 11-07-2021, 05:45 PM

i think ford put those on to test our patients 90 years in the future.

J Franklin · 11-07-2021, 07:01 PM

Rust in the tank can score the valve faces so if you take it out go ahead and install the filter screen in it.

Certimafied · 11-07-2021, 07:31 PM

JFranklin, you mean in the tank? How would one go about that? I don't have issues now but who knows what the future may bring!

mass A man · 11-07-2021, 07:44 PM

Sponsored Links (Register now to hide all advertisements)

It's a cigarette shaped filter that fits tightly into the feed opening of your gas valve, when you take it out of the bottom of your tank. Screw valve & new filter back in tank, I use a sealant on the threads, AND I put a dab of epoxy on the filter & valve, just in case it came loose somehow.

Certimafied · 11-07-2021, 07:50 PM

oh ok thanks

Synchro909 · 11-08-2021, 04:29 PM

This kit will fix it.
https://www.snydersantiqueauto.com/p...9345&cat=41707
It comes with a small amount of grease that won't dissolve in fuel. The small amount is all you will need. The grease fills the small scratches/irregularities in the surface of the taper and seals it up. I did this on mine a few years and 50,000 miles ago and it's still good. The nice part is how cheap the fix is.

Brad in Germany · 11-09-2021, 03:30 AM

I've been through two reproduction fuel valves and both leaked - returned under warranty. I haven't installed the third one yet, though the rebuild kit sounds appealing.

Brad in Maryland

ronn · 11-09-2021, 06:11 AM

at the price of gas, Ild buy another valve to install and fix this one as a back up.

Redbird · 11-09-2021, 09:41 AM

Here you go.<img src="https://modelastore.com/image/cache/catalog/products/3884-300x400.jpg" alt="A-9194 Fuel Shutoff Valve Screen"/>

11-07-2021, 03:41 PM	#1
jimTN Senior Member Join Date: May 2010 Location: Powell, TN Posts: 2,509	under tank gas valve leaking New valve, 29-early 31 style. Leaking thru to the carb. when shut off. Suggestions? Is there a spring in there to make the valve seal, it seems to turn very easy.

11-07-2021, 04:29 PM	#2
Certimafied Member Join Date: Aug 2020 Location: Belmont N.C. Posts: 85	Re: under tank gas valve leaking I’m not sure if yours is constructed the same, mine was a brass on brass seal. Basically like a ball valve. There is a spring in there that keeps tension on the two parts that is important as well as the correct amount of tension. I went in and polished the stationary part and the moving part attached to the handle. You can even use some sort of compound to lap the two pieces together to make a real nice machined surface between the two. I ended up using just some aggressive metal polish for the lapping. I suppose a purpose made lapping compound would work better, however I achieved a real nice working product at the end. It’s sounds like the spring inside may be broken or collapsed for some reason.

11-07-2021, 05:45 PM	#3
old ugly Senior Member Join Date: Aug 2021 Location: alberta canada Posts: 585	Re: under tank gas valve leaking i think ford put those on to test our patients 90 years in the future. __________________ old ugly my old father-in-law told me. "listen close when people tell you how to do stuff they may know something. then do it the way you want."

11-07-2021, 07:01 PM	#4
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,962	Re: under tank gas valve leaking Rust in the tank can score the valve faces so if you take it out go ahead and install the filter screen in it.

11-07-2021, 07:31 PM	#5
Certimafied Member Join Date: Aug 2020 Location: Belmont N.C. Posts: 85	Re: under tank gas valve leaking JFranklin, you mean in the tank? How would one go about that? I don't have issues now but who knows what the future may bring!

11-07-2021, 07:44 PM	#6
mass A man Senior Member Join Date: Jun 2010 Location: Danvers, Ma. Posts: 712	Re: under tank gas valve leaking Sponsored Links (Register now to hide all advertisements) It's a cigarette shaped filter that fits tightly into the feed opening of your gas valve, when you take it out of the bottom of your tank. Screw valve & new filter back in tank, I use a sealant on the threads, AND I put a dab of epoxy on the filter & valve, just in case it came loose somehow.

11-07-2021, 07:50 PM	#7
Certimafied Member Join Date: Aug 2020 Location: Belmont N.C. Posts: 85	Re: under tank gas valve leaking oh ok thanks

11-08-2021, 04:29 PM	#8
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: under tank gas valve leaking This kit will fix it. https://www.snydersantiqueauto.com/p...9345&cat=41707 It comes with a small amount of grease that won't dissolve in fuel. The small amount is all you will need. The grease fills the small scratches/irregularities in the surface of the taper and seals it up. I did this on mine a few years and 50,000 miles ago and it's still good. The nice part is how cheap the fix is. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

11-09-2021, 03:30 AM	#9
Brad in Germany Senior Member Join Date: May 2010 Location: Potomac, Maryland Posts: 911	Re: under tank gas valve leaking I've been through two reproduction fuel valves and both leaked - returned under warranty. I haven't installed the third one yet, though the rebuild kit sounds appealing. Brad in Maryland

11-09-2021, 06:11 AM	#10
ronn Senior Member Join Date: Feb 2011 Location: NNNNNNNNJJJJJJJJJJ Posts: 6,787	Re: under tank gas valve leaking at the price of gas, Ild buy another valve to install and fix this one as a back up.

11-09-2021, 09:41 AM	#11
Redbird Senior Member Join Date: Feb 2015 Location: Georgetown, TX Posts: 535	Re: under tank gas valve leaking Here you go.<img src="https://modelastore.com/image/cache/catalog/products/3884-300x400.jpg" alt="A-9194 Fuel Shutoff Valve Screen"/>