Silicon and gasoline. What was someone thinking. Most say on the tube not
for use with gasoline or on head gaskets. It could just be a loose hose or
one of the gravity valves on top of the expansion tanks. Also check the
operation of the vapor  recovery valve near the air filter. If all is well
whenever you open the cap for filling you should hear some pressure
escaping. After repairs the tank and vent system can be charged to 2-3 psi
to make sure the vapors are kept in.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Robert Stewart
Sent: Sunday, May 22, 2011 6:06 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Gas Vapors

A year ago my mechanic and I removed my new gas tank and installed the
crossover pipe and a seal kit with all the rubber grommets and clamps. He
used some special RTV silicone on all the rubber grommets before installing
it.

Now it's a year later and the smell of gas permeates outside the vehicle
when I fill up. I have no idea what to do.

I am at my wits end at this point.

Either a hose is damaged, or a seal must have blown ( hard to believe with
the new rubber and RTV silicone though).

Does anyone have any advice?

Thanks,
Robert
88 Automatic Wolfsburg
All New Fuel Lines
All New Hoses
Rebuilt Engine