In your left rear wheel well is a ball check valve. It is design to
stop the flow of gasoline liquid to the canister. If it is junked up
and stuck gas will flow to the charcoal canister and then on the ground.
The real problem is that they are no longer available new. Jim Bounds
suggested that they could be taken apart and cleaned carefully. You
might check with the many GMC suppliers and see if by chance that one is available.
J.R. Wright
>
> When I try to squeeze more gas into the
> >tanks, it
> >literally drains out from the bottom of the cannister, usually while I
> >am
> >inside the gas station paying my bill. (It causes quite a stir!) It
> >will
> >drain several cupfuls and eventually stop. I am wondering if any of
> >this is
> >connected with the consistent gas smell we have inside in the forward
> >part of
> >the rig. Sometime ago, someone posted, (and I think I saved to my
> >personal
> >archives), a message about cleaning the fuel vapor dohinky valve that
> >resides
> >ion the area of the drivers side rear wheels. Is any of this a part of
> >my
> >problem? Should I replace the cannister? Could it be saturated?
> >
> >Anyway, thanks in advance as always. Larry Nelson, PB 75, Springfield,
> >MO
>
> It is definately the doo hicky valve just aft of the leading tandem wheel
> on the driver's side. Replace it!
>
> David Lee Greenberg
> GMC Motorhome Registry
> 200 MacFarlane Drive
> Delray Beach, FL 33483-6829
stop the flow of gasoline liquid to the canister. If it is junked up
and stuck gas will flow to the charcoal canister and then on the ground.
The real problem is that they are no longer available new. Jim Bounds
suggested that they could be taken apart and cleaned carefully. You
might check with the many GMC suppliers and see if by chance that one is available.
J.R. Wright
>
> When I try to squeeze more gas into the
> >tanks, it
> >literally drains out from the bottom of the cannister, usually while I
> >am
> >inside the gas station paying my bill. (It causes quite a stir!) It
> >will
> >drain several cupfuls and eventually stop. I am wondering if any of
> >this is
> >connected with the consistent gas smell we have inside in the forward
> >part of
> >the rig. Sometime ago, someone posted, (and I think I saved to my
> >personal
> >archives), a message about cleaning the fuel vapor dohinky valve that
> >resides
> >ion the area of the drivers side rear wheels. Is any of this a part of
> >my
> >problem? Should I replace the cannister? Could it be saturated?
> >
> >Anyway, thanks in advance as always. Larry Nelson, PB 75, Springfield,
> >MO
>
> It is definately the doo hicky valve just aft of the leading tandem wheel
> on the driver's side. Replace it!
>
> David Lee Greenberg
> GMC Motorhome Registry
> 200 MacFarlane Drive
> Delray Beach, FL 33483-6829
