The Ford Barn

CatMan1 · 05-15-2023, 02:54 PM

The interior gas valve must be leaking. When I shut it off the car will run out of gas and die, but later, a day or two, I can smell gas and see some on the floor. This valve probably isn't the original, but I don't know. Is it possible that after a few years these can go bad?

BRENT in 10-uh-C · 05-15-2023, 03:06 PM

Quote:

Originally Posted by CatMan1

The interior gas valve must be leaking. When I shut it off the car will run out of gas and die, but later, a day or two, I can smell gas and see some on the floor. This valve probably isn't the original, but I don't know. Is it possible that after a few years these can go bad?

It has been my experience that the only thing that causes them to leak as you are suggesting is when some foreign media (dirt, sand, rust, grit) enters the valve and scores the housing or the stem. When there is rust or grit present, it will continue to happen no matter how often you replace the valve. Even an aftermarket stainless ball valve will also leak when the grit is present.

Y-Blockhead · 05-15-2023, 03:09 PM

Quote:

Originally Posted by CatMan1

The interior gas valve must be leaking. When I shut it off the car will run out of gas and die, but later, a day or two, I can smell gas and see some on the floor. This valve probably isn't the original, but I don't know. Is it possible that after a few years these can go bad?

CatMan, there was a recent discussion on the subject. https://www.fordbarn.com/forum/showthread.php?t=325994.

There have been numerous posts about leaking S/O valve

CatMan1 · 05-15-2023, 03:36 PM

Looks like I'll be looking to put a new one on sometime. Say, where I work we sell X-Pando sealant. Anyone ever try this? Does it work well?

nkaminar · 05-15-2023, 03:42 PM

This works: https://www.aircraftspruce.com/catal...ezturnlube.php

Synchro909 · 05-15-2023, 05:30 PM

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It's quite a few years now since I used one of those Snyders kits to repair a leaky valve on my car. I was fascinated by the lubricating "grease" they supplied in a capsule. I strongly suspect the grease did not only lubricate the valve but it filled any irregularities/scratches in it.
I got to wondering what the grease was. It had to be fuel proof and lubricate. Everything I tried was dissolved by the petrol (gas), even silicone grease. Where else is a water soluble lubricant used I asked myself. Then it hit me.
Wait for it.....

KY jelly.
I haven't tried it (not sure I want my wife to find it!) but I bet some of that will help a leaky valve. Maybe a light lapping with toothpaste first, then a little KY.

Floats · 05-16-2023, 11:35 AM

Tks

katy · 05-18-2023, 10:14 AM

Quote:

Originally Posted by Synchro909

It's quite a few years now since I used one of those Snyders kits to repair a leaky valve on my car. I was fascinated by the lubricating "grease" they supplied in a capsule. I strongly suspect the grease did not only lubricate the valve but it filled any irregularities/scratches in it.
I got to wondering what the grease was. It had to be fuel proof and lubricate. Everything I tried was dissolved by the petrol (gas), even silicone grease. Where else is a water soluble lubricant used I asked myself. Then it hit me.
Wait for it.....

KY jelly. I haven't tried it (not sure I want my wife to find it!) but I bet some of that will help a leaky valve. Maybe a light lapping with toothpaste first, then a little KY.

Red rubber grease is impervious to gasoline, see: https://www.greasemonkeydirect.com/b...rease-used-for

05-15-2023, 02:54 PM	#1
CatMan1 Senior Member Join Date: Jun 2021 Location: Pella, IA Posts: 337	Leaking Gas Valve The interior gas valve must be leaking. When I shut it off the car will run out of gas and die, but later, a day or two, I can smell gas and see some on the floor. This valve probably isn't the original, but I don't know. Is it possible that after a few years these can go bad?

05-15-2023, 03:36 PM	#4
CatMan1 Senior Member Join Date: Jun 2021 Location: Pella, IA Posts: 337	Re: Leaking Gas Valve Looks like I'll be looking to put a new one on sometime. Say, where I work we sell X-Pando sealant. Anyone ever try this? Does it work well?

05-15-2023, 03:42 PM	#5
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,897	Re: Leaking Gas Valve This works: https://www.aircraftspruce.com/catal...ezturnlube.php __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

05-15-2023, 05:30 PM	#6
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: Leaking Gas Valve Sponsored Links (Register now to hide all advertisements) It's quite a few years now since I used one of those Snyders kits to repair a leaky valve on my car. I was fascinated by the lubricating "grease" they supplied in a capsule. I strongly suspect the grease did not only lubricate the valve but it filled any irregularities/scratches in it. I got to wondering what the grease was. It had to be fuel proof and lubricate. Everything I tried was dissolved by the petrol (gas), even silicone grease. Where else is a water soluble lubricant used I asked myself. Then it hit me. Wait for it..... KY jelly. I haven't tried it (not sure I want my wife to find it!) but I bet some of that will help a leaky valve. Maybe a light lapping with toothpaste first, then a little KY. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

05-16-2023, 11:35 AM	#7
Floats Senior Member Join Date: Dec 2013 Location: Mossel Bay, about 300km from Cape Town Posts: 530	Re: Leaking Gas Valve Tks __________________ Regards Chris Cape Town 28 Model A RPU, 29 Chevy Phaeton, 67 E Type FHC, 67 250SL Pagoda, 83 911 SC Last edited by Floats; 05-17-2023 at 11:04 AM.