Midway between front and back is right about where the fuel pump and fuel filter
is.  Did yuo actually crawl under and look, or just look under from the side?
If there ws a leak from the the fuel lines around the filter or pump, you umay
perceive it as a leak from the frame beam.  The pump and filter are hidden
behind that, and you can't see them unless you get right under the van.  As far
as I know, no gas lines run inside the frame beam.  I speak from experience with
my aircooled, van, but as far as I know the fuel delivery sytem is the same on
water cooled vans.  Get this dealt with fast.  Leaking gas is an accident
waiting to happen.

I've just dealt with a complete fuel tank, pump, and filter replacement, so let
me know if you have any questions.  I may be able to offer some advice.

Greg.
82 westy.

Colin Stanfield wrote:

> I smelled gasoline this weekend as I took my temperamental Vanagon on a city
> wide adventure. I discovered I have a steady drip  (one drip every 2
> seconds) of gas coming from passenger side of the van (about equidistant
> between the front and rear wheels). Looking underneath it seems as the gas
> is dripping out of a boxed frame beam running the length of the underbody.
> Is there a gas line in there? How would one go about getting at it?
>
> Thanks for the input.
>
> Colin