I don't know if this applies to the leak on your bus, but I found that
fitting the old style large OD fill pipe was a challenge. My first time at
the job saw the O-ring at tank filler hole last a while but then leak.
AFAIK, there were two factors that caused this leak:

- slightly misaligned install of fill tube + related parts by me
- and/or poor alignment of the tank fill hole to hole in frame.

Some images and rambling: https://picasaweb.google.com/musomuso/GasTank

So far, the seal is ok, but the hole in tank *barely* aligns with hole in
frame. I attribute that to the design of the lesser expensive aftermarket
Brazilian tank. There's nothing I can see beyond a twisted frame (not
likely) that would cause this poor alignment.

Check Bus Depot for the adaptor bushing. Last time I checked they had it.
Upgrading to the smaller ID filler tube is something I will do sooner than
later.

Neil.

On Thu, May 17, 2012 at 4:26 AM, B Feddish <uprightbassghost@hotmail.com>wrote:

> OK, I�ve had this issue probably 2 years now.  After filling up the gas
> tank I am rewarded with a gas soaked filler tube after each right turn.  I
> have replace everything from the filler tube to the gas cap twice with new
> and used parts.  I am getting ready to take it all apart again and apply a
> thin bead of silicon around all the parts around the top of the tube to the
> cap unless someone has anymore suggestions.  Yes, I know the later years
> had that floaty-ball ball in there to stop this �defect� but I have the
> 83.5 with the foot wide filler tube that allows half the tank to slosh up
> it at every turn.
>
> Thanks,
> Bryan
>

-- 
Neil n

65 kb image Myford Ready For Assembly  http://tinyurl.com/64sx4rp

'88 Slate Blue Westy to be named.

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG Gas I4/VR Swap Google Group:

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines