could be the large grommet sealing the filler tube to the tank, the connections on the filler tube itself (adjacent to the body, inthe wheel well), the small hose coming off the filler tube or it could be one of the 3 (?) grommets in the top of the tank (those grommets which seal the tubes to the expansion tanks).

You might be able to see a leak in the filler assembly, the grommets on the top of the tank are harder to see when tank in van. You can reach in and feel them with your hand. Chances are it is the harder to see grommets. If I was you I'd plan on dropping the tank and replacing them.

alistair

On 2011-11-27, at 7:46 AM, Dave Mcneely wrote:

> Last time I filled the fuel tank on my camper, fuel ran out from the top of the
> tank somewhere.  I was at at gas station/convenience store, and went into the
> store for something after filling up.  When I came out, I noticed a small puddle
> under the van, and more fuel dripping down.  I investigated and found that the
> fuel seemed to come from the top of the gas tank.  I left the van sitting for a
> bit, and the drips decreased, stopped.  I then started it up, drove it a few
> blocks, and there seemed to be no more leak.  Therefore, with rechecking
> periodically, I risked driving home, some 60 miles.  Seemingly no more leaks.
> Now, there it sits in the driveway, showing no evidence of leaking.  One other
> point may matter.  The automatic shutoff on the nozzle failed.  The filler inlet
> did not overflow, because I was attentive.  However, there was gasoline all the
> way to the top of the inlet tube.
> 
> So, is the inlet tube bad?  Will I only know where the leak came from by
> dropping the tank?  I think that, though I think it must be the inlet tube or
> its connection to the tank.
> 
> I have never noticed a gasoline smell after filling up, and I have never had a
> leak (overflow?) like this before to my knowledge.  However, this leak was
> substantial.
> 
> mcneely