New Problem

[walt taylor]

>
> GMCers
>
> Well, left the house today and drove my lady about 7 miles and decided
> to get gas. Tanks were about 1/2 full. Took off the gas cap and it
> erupted with a geyser of gasoline. I had to put it back on to stop the
> flow. Just got out of the shower because I was covered head to toe.
> Any ideas?
>
> Take Care
> Arch

Ours did that rather routinely when fueling, due to a
plugged vent to the front tank. It would sometimes occur up
to 30 seconds after the gas pump had stopped.

Never had it burp before fueling though. Could a plug to
separator or vapor recovery account for that much pressure?

Walt Taylor
Austin, TX
'75 Eleganza

 

[ron & gina]

Dam tanks!!!.....
Gotta be in the vent sys., Separator/Canister, Lines. And I know you don't
want to say that other word. Hope its the easier one's!! And on the gas
coming back up at you, Maybe your fuel fill line's, Overflow line is
blocked-up, holding some fuel init due to the blocked vent system? And when
you opened it. Just a thought, The fuel line seems to big/long to hold gas
init.
Know you'll get it. Been doing some great work!!! And giving me some great
lessons on Photopoint.

Ron&Gina
73 Pumpkin-Rose
Ft. Mohave, AZ.

- ----- Original Message -----
From:
To:
Sent: Monday, May 22, 2000 1:04 PM
Subject: GMC: New Problem

> GMCers
>
> Well, left the house today and drove my lady about 7 miles and decided
> to get gas. Tanks were about 1/2 full. Took off the gas cap and it
> erupted with a geyser of gasoline. I had to put it back on to stop the
> flow. Just got out of the shower because I was covered head to toe.
> Any ideas?
>
> Take Care
> Arch

 

[david l greenberg]

> In a message dated 5/22/00 6:17:35 PM Eastern Daylight Time,
> Gcbr

>
> >
>
> Arch, The answer is quite simple. After all the engine and drive
> train work, the cleaning and polishing, the lubing and balancing, and
the
> removal of all the aluminum cans (one at a time), the coach is running
sooooo
> efficiently it is actually making gas!!!!!!
> Take care, travel safely............. JR

Yeh, but is it Methane, JR?

David Lee Greenberg
GMC Motorhome Registry
Dedicated to the preservation of the Classic GMC
http://www.gmcss.com/registry.htm

 

[emerystora]

>In a message dated 05/22/2000 9:07:19 PM Central Daylight Time, Gcbr
>writes:
>
> Can you tell me if this is a sealed cap or a vented one. Seems to me
> that a vented cap would have prevented this from happening. Just
> MHO. Thanks!
> >>
>Arch, I don't know, but I do know that when I take my gas cap off, it NEVER
>seems to release any pressure. So I'm guessing it must be vented!
>Justin

Arch - be aware that there are two kinds of "vented" caps. One gives
an open path to the outside. The other will vent off a vacuum by
allowing air to enter the filler neck but it is a one way valve that
will prevent fumes from going out to the atmosphere. This would
prevent a vacuum when the fuel cools in the tank but it will also
allow pressure to build up when the fuel in the tanks heat up.

Emery Stora
77 Kingsley
Santa Fe, NM