gas cap leak?

OG67westy · Posted: Mon Oct 20, 2014 7:28 pm Post subject: gas cap leak?

whenever I take a hard left with a full tank of gas, fuel pours down the side of the car. Should there be a rubber seal on the gascap? it appears to be metal on metal, but fits tight...appears to be a venting cap, could that be the issue? TIA
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'67 Westy pearl white "Greta"
'67 Westy velvet green "Ken's bus"
'74 Thing blizzard white "Schatze"
'61 Panel dove blue"Rche"
'65 Bug rusty"Tina"
'83 Porsche 944

hobie16 · Posted: Mon Oct 20, 2014 8:47 pm Post subject:

There is a gasket that sits on the inside of the gas cap. The replacement ones are very stiff and hard to get in. Maybe the Brothers know how to get it in.
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Ron Domeck · Posted: Tue Oct 21, 2014 5:43 am Post subject:

Can't be much help here. Who makes a gasket? I have seen them for the locking cap.

citroen · Posted: Tue Oct 21, 2014 3:33 pm Post subject:

Like brother said I have not seen a gasket this is what a factory original looks like see if yours look like this . thanks Dennis Domeck

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Al Capulco · Posted: Tue Oct 21, 2014 5:41 pm Post subject:

I have those factory brick red gaskets. Got them from Germany years ago. Never tried to install one.

OG67westy · Posted: Wed Oct 22, 2014 8:47 am Post subject:

I do have the original cap. Could it be that the rubber "valve" type thing in there is dried out/torn ?
_________________
'67 Westy pearl white "Greta"
'67 Westy velvet green "Ken's bus"
'74 Thing blizzard white "Schatze"
'61 Panel dove blue"Rche"
'65 Bug rusty"Tina"
'83 Porsche 944

vwwestyman · Posted: Mon Sep 28, 2015 5:27 am Post subject:

Has anyone come up with a fix for this?

Upon left turns, fuel is spraying out of my cap! I can look over and watch the fuel spraying out. (Doors off.)

The red seal is there and not cracked, though I don't know how good of a job it is doing.

Is there some piece of the cap further inside it that could be leaking?

Are there any good quality replacements available?
_________________
Dave Cook

President, Wild Westerner Club

1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing

Zylinderkopf · Posted: Mon Sep 28, 2015 5:55 am Post subject:

I couldn't find a replacement seal/gasket either so I ended up buying a new gas cap. You can get them at thethingshop.com. Have you checked all your hoses under the hood for leaks? Have you also checked the seal for the filler cap on the tank?
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1963 Beetle
1966 Beetle 1300
1970 Karmann Ghia Coupe
1971 Super Beetle
1974 Thing

"A lot of people never use their initiative because no one told them to."

vwwestyman · Posted: Mon Sep 28, 2015 7:03 am Post subject:

vwwestyman · Posted: Mon Sep 28, 2015 7:07 am Post subject:

Opinions on The Thing Shop regular vs. locking gas caps?

I did see one comment in searching that called their locking gas cap a piece of crap. But maybe that was an old style or something.
_________________
Dave Cook

President, Wild Westerner Club

1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing

oasis · Samba Member Joined: December 12, 2002 Posts: 2168

Zylinderkopf · Posted: Mon Sep 28, 2015 7:48 am Post subject:

I bought the replacement gas cap from the Thing Shop and it works fine. I didn't get the one with the lock, even though TheThingShop says they are superior in quality. I just didn't want to have to mess with a key and having to lock/unlock. It also doesn't look stock.
_________________
1963 Beetle
1966 Beetle 1300
1970 Karmann Ghia Coupe
1971 Super Beetle
1974 Thing

"A lot of people never use their initiative because no one told them to."

OG67westy · Posted: Mon Sep 28, 2015 8:09 am Post subject:

I made a seal for mine, and it fixed the problem immediately. Only problem is, the seal isn't holding up. I guess I'll try and find some material that holds up better than an old innertube...
_________________
'67 Westy pearl white "Greta"
'67 Westy velvet green "Ken's bus"
'74 Thing blizzard white "Schatze"
'61 Panel dove blue"Rche"
'65 Bug rusty"Tina"
'83 Porsche 944

bald_dude43 · Posted: Mon Sep 28, 2015 3:32 pm Post subject:

Look at your cap itself. Are the three bent in tabs too far out? Use some needle nose pliers to bend them back in very carefully. Check your filler neck. Are the sides worn or bent unevenly? Use a pair of needle nose pliers to even them out. If the gasket is smooth all the way around and has no cracks then it should seal properly as long as the above mentioned cap and neck are properly aligned. You can get some engine gasket material and make your own using door knob hole drill bits and a slow turning drill.

Ron Domeck · Posted: Mon Sep 28, 2015 4:08 pm Post subject:

How about just putting a new cap on, there not that pricey.

bald_dude43 · Posted: Mon Sep 28, 2015 10:40 pm Post subject:

Al Capulco · Posted: Mon Sep 28, 2015 10:56 pm Post subject:

If you want to try a factory gasket, let me know, I will send you one. I never had to replace one, so I don't know how hard they are to replace.

kubelmann · Samba Member Joined: April 13, 2003 Posts: 3266

I have tried a number of times and have broken the red gasket in half each time. A few years ago, some Thing lover figured out that a standard bathtub drain gasket is close to the same size and serves as a fuel resistant rubber gasket... I seem to remember that the gasket cost way less than $5

vwwestyman · Posted: Tue Sep 29, 2015 9:36 am Post subject:

dagimp · Posted: Wed Sep 30, 2015 7:39 am Post subject: Re: gas cap leak?


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