Re: [ihc] Milage question

[Steven Stegmann <steve.stegmann@xxxxxxxxxxxxx>]

If you smell gas around the vehicle, you have a leak
somewhere.  Find it and fix it.  That should help the
mileage when it is standing.

Steve

--- David Bongo <dbongo@domain.elided> wrote:

> I've been tracking the milage on my Scout, and I've
> noticing an odd
> phenonom.  When the truck is run every day I get
> good milage (definied
> at 7.5-8.0 mpg on 87 octane gas).  But if it sits
> for 1 or 2 days
> between fill-ups, it drops way down.
> 
> There is a slight gas smell (or, if you wish to be
> grammatically
> correct, "gasoline odor") around the rig.  So, my
> questions would be:
> 
> 1> Could enough gas evaporate to make a difference?
> 
> 2> What could be the cause of the smell?
> 
> I've got a 33 gallon tank, with most of the vent
> lines welded shut. 
> One leads to a charcoal cannister which isn't even
> hooked up correctly
> (the nipple for the vaccuum line is broken off, so
> it gets just the
> tank and carb vents) and the other dead-ends and is
> blocked.  I've
> also got a new, locking, non-vented gas cap.
> 
> The only possible thing I can think of is the
> complex menagerie of
> pipes (some sort of vapor recovery thing) that is
> connected to the
> filler neck and tank...except it's not connected to
> the tank.  I
> haven't popped the panel off the interior of the rig
> yet to inspect
> the setup, so it is just a theory.  Any other ideas?
> 
> Oh, as for the difference:  I gassed up on 8/7 and
> 8/10.  In that time
> (which included one Sunday where the rig didn't
> move) I got about 8.5
> MPG.  My next fill-up was on 8/21 (yes, a whopping
> 11 days) and I got
> under 7.4MPG.  Game gas, same station, heck, I even
> used the same
> pump.
> 
> Dave