The Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Thinking again ...
We are still asking:
What did you
get done on
your Bolt today

The question, initially posted May 23, 2005, was:
"Whatcha do on your Bolt
this weekend?"

After 51,906,997 views, 7378 replies over 185 pages, this thread in General Truck Talk is a happening! And it's not just weekends anymore.

Now with pictures
and No BOTS.

So ...

What did you get done on your Bolt today????

Stovebolt Site Search
Oh Lord, I just gotta find it....

A pdf guide to help you search the Site

Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!

Who's Online Now
7 members (dunfire, 51Craig1Ton, MikeE, 53 green 1- ton, Bill Trotter, 1 invisible), 72 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Most Online1,229
Jan 21st, 2020
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Gas expansion
#694849 Sun Nov 14 2010 06:06 PM
Joined: Sep 2007
Posts: 27
chrmc Offline OP
51, 3/4 ton, 235, new gas tank, I have filled the tank with gas in the cool of the morning, parked in front of the house. The truck is sitting at a slight angle against the curb. The day has heated up and the truck is in the sun, gas starts leaking out from the filler cap. I did not top off at the gas station. The immediate fix I did was to pull that side of truck up on to the curb, no leak. What is going on and what can keep this from happening. Different kind of gas cap????

Re: Gas expansion
chrmc #694851 Sun Nov 14 2010 06:18 PM
Joined: Jul 2001
Posts: 3,904
Master Gabster
happens to us all, just hafta live with it - you listed the exact reasons it happens, just filled tank warms up with truck leaning to the filler side, so you know what to avoid, no way to prevent liquid expanding with temp


Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot
Re: Gas expansion
squeeze #694864 Sun Nov 14 2010 07:33 PM
Joined: Nov 2009
Posts: 689
I never fill my Harley for the same reason. Even on a cool day like today (mid 40's) it seems to expand and dump two gallons on the ground.

Re: Gas expansion
twotone #694869 Sun Nov 14 2010 07:45 PM
Joined: Aug 2005
Posts: 9,484
Ex Hall Monitor
An unvented gas cap would create a different problem if you did change out the vented one to stop the gas from leaking out. An unvented cap would create a vacuum in the fuel system, eventually resulting in fuel starvation issues.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Let's go Jared!
Name your dog Naked so you can walk Naked in the park.
Re: Gas expansion
Tiny #694898 Sun Nov 14 2010 09:47 PM
Joined: Jan 2008
Posts: 4,802
These vehicles were built before automatic nozzles. An experienced filling station hand could hear when the tank was approaching full and he quit filling. With today's automatic nozzles, it is possible to overfill them. Next time you fill it, watch the gauge and quit when it shows full.

Re: Gas expansion
crenwelge #694899 Sun Nov 14 2010 09:58 PM
Joined: Sep 2007
Posts: 27
chrmc Offline OP
Yes, older style nozzles were longer, went further down the filler. I think I will try and develope my ear to the noise of gas coming up the filler. Probably have to hold back the seal on the nozzle though. Many thanks

Re: Gas expansion
chrmc #694904 Sun Nov 14 2010 10:23 PM
Joined: Mar 2002
Posts: 9,137
Didn't the old nozzles produce a whistle that stopped when it was getting full? I don't have problems from expansion because I always listen for the noise in the pipe. The only problem I have is trying to hear when someone has a radio blaring away.

Re: Gas expansion
truckernix #694932 Mon Nov 15 2010 01:41 AM
Joined: Jan 2008
Posts: 4,802
The old nozzles weren't built with a whistle, but there was a change in tone when the tank neared full. Some cars had a loud whistle, but it was from the shape of the fill pipe.

Re: Gas expansion
crenwelge #694934 Mon Nov 15 2010 01:54 AM
Joined: Oct 2006
Posts: 951
Shop Shark
I listen for the change in noise also.I don't fill the tank when I know I'm going park soon after

Re: Gas expansion
BC52 #694943 Mon Nov 15 2010 02:25 AM
Joined: Mar 2002
Posts: 9,137
I wondered where the sound used to come from in the good old days! My 38 Master which I would imagine is similar to the truck, doesn't have the little air bleed passage in the filler like my 51 GMC does. I am wondering if it will be a little trickier to fill up when I use it some day.

Page 1 of 2 1 2

Moderated by  Justhorsenround 

Link Copied to Clipboard
Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.4