The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 02-13-2020, 01:05 AM   #1
Osvaldogee
Registered User
 
Join Date: Oct 2018
Location: Escondido, California
Posts: 16
Gas Pumps Won’t Pump Gas

Anyone else have this problem when putting gas and know how to fix it?
Posted via Mobile Device
Osvaldogee is offline   Reply With Quote
Old 02-13-2020, 01:38 AM   #2
dmack91
Registered User
 
dmack91's Avatar
 
Join Date: Jan 2011
Location: Redmond, OR
Posts: 720
Re: Gas Pumps Won’t Pump Gas

Check that your vent hose is clear first. I had a dodge that I had to drive up on 4x4 block on the tank side for it to take fuel.
__________________
68 Chev C20- son has it now
83 K20 - bought from son- in progress
dmack91 is offline   Reply With Quote
Old 02-13-2020, 03:44 AM   #3
mongocanfly
Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 10,585
Re: Gas Pumps Won’t Pump Gas

different stations with different style pumps cause issues...theres 4-5 stations around here I avoid because of that problem...I have no issues with the others
but like dmack says....check the vent
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is online now   Reply With Quote
Old 02-13-2020, 04:50 AM   #4
franken
Registered User
 
Join Date: Jun 2013
Location: Somewhere
Posts: 2,547
Re: Gas Pumps Won’t Pump Gas

I doubt if it's an issue w/ the pump. More likely the vehicle. Squares have a horizontal run on the gas fill that made them spit gas when they ere young. I'll guess the gpm rate is faster these days.
franken is offline   Reply With Quote
Old 02-13-2020, 08:17 AM   #5
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 1,874
Re: Gas Pumps Won’t Pump Gas

Yup the vent isn't working. One of my trucks takes gas very slow because I am too lazy to fix the vent. My other truck drinks gas like a boss. I put the pump on wide open and let her fill. Both 76's.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
cadillac_al is offline   Reply With Quote
Old 02-13-2020, 09:07 AM   #6
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 1,460
Re: Gas Pumps Won’t Pump Gas

I have found that even in OK where we don't have vapor capture nozzles, filling at stations where I can get the front of the truck a bit lower then the rear really helps. It doesn't take much slope to make a big difference.
Dead Parrot is offline   Reply With Quote
Old 02-13-2020, 11:35 AM   #7
truckin 79
Registered User
 
Join Date: Jun 2014
Location: Lvld CO
Posts: 301
Re: Gas Pumps Won’t Pump Gas

Sometimes you have to pull out a little.............sounds weird just typing that lol . I have found that works best at certain stations.
__________________
79 Chevy 2wd BIG10 350 TH400
truckin 79 is offline   Reply With Quote
Old 02-13-2020, 11:57 AM   #8
Ziegelsteinfaust
Registered User
 
Join Date: Dec 2012
Location: Chino Hills
Posts: 2,010
Re: Gas Pumps Won’t Pump Gas

It could very well be a california thing. Still verify the vent it good though.

My 18 Silverado I have to turn the nozzle upside down to work.

My 15 Focus I had to push it just the right amount.

My last C20 was all over the map, but usually upside down did the trick.

Alot of it has to do with Gpm and pressure sensors to avoid reversion or aka spilling. The AQMD has mandated sensitive pumps which can make things a nightmare.
I use many different pumps around Pasadena to Corona, and well in to Bishop area. The all f me.
Ziegelsteinfaust is offline   Reply With Quote
Old 02-13-2020, 12:26 PM   #9
Killer Bee
Registered User
 
Killer Bee's Avatar
 
Join Date: Jan 2016
Location: Barber City, CA
Posts: 3,180
Re: Gas Pumps Won’t Pump Gas

assuming the dispenser isn't defective, filters clogged, or some other maintenance issues... once the pump is authorized, turn on the pump either by selecting grade or lifting the hook on older styles and wait for the head to fill, approx. 10 seconds or sometimes on vst systems you can hear it when there's full head pressure the pump changes tone.. then open the nozzle.. opening the nozzle before the head above the pump is full of fuel all the way to the grade selector and check valves may slow down the performance of the pump..

I am an icc licensed ca ust designated operator but I work in closed fleet not retail so there may be differences I am not aware of..

after about a dozen pages of all the regulations, my eyes cross and smoke rises out of my ears
https://www.waterboards.ca.gov/water....html#operator
https://www.iccsafe.org/wp-content/u...uc_content.pdf
__________________
I started out with nothing - and I still have most of it
Killer Bee is offline   Reply With Quote
Old 02-16-2020, 04:54 PM   #10
68c10owner
Senior Member
 
68c10owner's Avatar
 
Join Date: Oct 2003
Location: Carmichael, California
Posts: 2,986
Re: Gas Pumps Won’t Pump Gas

Some stations I have gone to with past squares I`ve had to pull up the rubber boot on the dispenser to get it to pump
__________________
Anthony
79 C10 SWB
68c10owner is offline   Reply With Quote
Old 02-16-2020, 05:45 PM   #11
Killer Bee
Registered User
 
Killer Bee's Avatar
 
Join Date: Jan 2016
Location: Barber City, CA
Posts: 3,180
Re: Gas Pumps Won’t Pump Gas

Quote:
Originally Posted by 68c10owner View Post
Some stations I have gone to with past squares I`ve had to pull up the rubber boot on the dispenser to get it to pump
some tension on the vapor boot is required for normal operation..

the purpose of this tension is to create adequate vapor seal which returns through the outer wall of the hose, the inner wall carries the liquid..



they do go bad, however usually fail to release when boot is relaxed


and ironically, they all almost always smell of fumes when fueling, I don't think I've ever seen one work as intended..

however the healy systems with an active vapor vacuum pump work much better..

the fuel travels in the outer wall and the vapor through the inner wall of the hose..

happy motoring
__________________
I started out with nothing - and I still have most of it
Killer Bee is offline   Reply With Quote
Old 02-16-2020, 08:49 PM   #12
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 1,874
Re: Gas Pumps Won’t Pump Gas

Oh yeah, those new style pumps suck on any vehicle. I have never tried those on my truck. They used to have those pumps in NH and my Buick wouldn't fill right either. I'm glad NH got rid of them.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
cadillac_al is offline   Reply With Quote
Old 02-21-2020, 12:13 AM   #13
heavy71chevy
Registered User
 
heavy71chevy's Avatar
 
Join Date: Apr 2007
Location: antreville, south carolina
Posts: 873
Re: Gas Pumps Won’t Pump Gas

Yea pull the pump nozzle out to where the slant is..works everytime.ally obs trucks were like this
__________________
"Dixie Destroyer"
71 C10 LWB Fleet
Future Blown Prostreet Monster
heavy71chevy is offline   Reply With Quote
Old 02-21-2020, 07:14 AM   #14
REDROCKER652002
Registered User
 
Join Date: Nov 2018
Location: South San Francisco CA,
Posts: 226
Re: Gas Pumps Won’t Pump Gas

I have to do this with my motorcycle. Just pull the round boot thing on the nozzle towards the handle. You will get the darn thing to think it is sealed and it will work. Just be careful, the fuel will spit out of the tank like a........ Well, I think you get the picture. LOL.
REDROCKER652002 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:38 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com