I was told this is likely a regulator that is slowly failing. They tend to vent some gas to the air
when the tank pressure gets very low, or at least that is how it was explained to me. I had
mine tested at a shop when the tank was full and no leaks were found, so this was his theory.
It seems to be true, as I only smell it when the tank is nearly empty. I bought a new regulator
from GoWesty but still haven't installed it.

On 10 May 2007 at 22:10, Jeff Palmer <jpalmer@MTS.NET> wrote:

> I've often noticed that as my propane tank runs out, I can smell a
> hint of gas outside the van.  When it's full no problem.  Am I
> imagining things?
>
> Jeff
> On 10-May-07, at 9:34 PM, Kim Brennan wrote:
>
> > For my AC work several years ago I bought a very nice HC detector.
> > Works to find leaks in the propane lines (or gas lines). Darn useful.
> > Helped me isolate a leaking fuel sending unit that had puzzled me for
> > a while. The human nose is only so good.

Shawn Wright
http://members.shaw.ca/vwdiesels
'88 Westy 1.6TD 5 speed
'85 Jetta Diesel 1.6NA