Author Topic: Filler neck trouble!  (Read 19746 times)

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #15 on: November 24, 2015, 10:54:48 PM »
Huh, thats weird, send a simple pic of side of truck.  I may try to modify.
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline LTZ C20

  • Senior Member
  • ****
  • Posts: 3795
  • "I'm here for a good time" -George Strait
Re: Filler neck trouble!
« Reply #16 on: November 25, 2015, 08:00:56 AM »
Huh, thats weird, send a simple pic of side of truck.  I may try to modify.
You mean like literally a picture of the side of the truck? Not exactly sure what a simple picture is? Did you mean sample maybe? Or did you want a pic of the fuel filler tube?
LTZ Cheyenne C20

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #17 on: November 25, 2015, 04:52:57 PM »
The location of the filler tube, i'm trying to figure out why yours works so well and everybody else has problems with gas backing up. Its not so mucha problem, but it runs down the side and starts ruin the paint.
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline LTZ C20

  • Senior Member
  • ****
  • Posts: 3795
  • "I'm here for a good time" -George Strait
Re: Filler neck trouble!
« Reply #18 on: November 25, 2015, 11:30:18 PM »
Ok, I'll take a picture soon as I can. The only time I have had an issue with it spilling down the side  is when I accidently over filled it.
LTZ Cheyenne C20

Offline Jason S

  • Senior Member
  • ****
  • Posts: 1561
Re: Filler neck trouble!
« Reply #19 on: November 26, 2015, 12:33:33 AM »
Knowing that when I had the round hole bed, there was trouble with certain fuel pumps in Texas and most of the fueling issues were in the smog sensitive areas...  Below is a thread that may be of interest.

http://forum.73-87chevytrucks.com/smforum/index.php?topic=30092.msg252597#msg252597
1973 GMC K2500, Super Custom, Camper Special, 350, TH350, NP203, 4.10's
1974 Chevrolet K10, Custom Deluxe, 350, SM465, NP203, 3.73's

"1) Peace through strength; 2) Trust but verify; 3) Beware of evil in the modern world"

Offline Blazin

  • Blazin new trails!
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6130
Re: Filler neck trouble!
« Reply #20 on: November 26, 2015, 11:56:05 AM »
Every square I have ever owned has this problem, & I have had a lot of them. I found the lever upside down is the best remedy.
Also when ever I have to remove a tank, or fill pipe in one of mine, I replace it with the filler neck from a diesel, no flapper doodle thingamajig! Plus if you ever need to fill with a gas can its way easier!
Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs

Offline LTZ C20

  • Senior Member
  • ****
  • Posts: 3795
  • "I'm here for a good time" -George Strait
Re: Filler neck trouble!
« Reply #21 on: November 27, 2015, 01:12:11 PM »
As promised, pics.
Right




Left




They are the same, just opposites of each other.
LTZ Cheyenne C20

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #22 on: November 27, 2015, 05:05:51 PM »
Thanks, i just got back from thanksgiving, will compare to mine asap andlet you know if different.
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline Dr_Snooz

  • Junior Member
  • ***
  • Posts: 590
  • "I like to take hammers, and just break stuff"
Re: Filler neck trouble!
« Reply #23 on: November 28, 2015, 08:12:27 PM »
The problem with the earlier trucks was that the filler neck angle was just too sharp at the top.

This. The hose connecting the tank to the filler door assembly makes a very sharp, 90 deg. turn before dumping into the tank. It creates a lot of turbulence and blowback when filling. You might have better luck with a flexible hose instead of the formed rubber one that comes stock. Not sure if flex hose is available for this application though.
1989 Chevy Suburban V-2500, 5.7L, TH400

1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80

2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #24 on: November 28, 2015, 09:50:01 PM »
At least it's an idea! I'm looking into it.
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Filler neck trouble!
« Reply #25 on: November 28, 2015, 09:56:20 PM »
This has been a complaint since this body style was introduced in 1973. I was working at a gas station pumping gas and everyone was howling about how they couldn't fill their trucks except at a trickle. The problem with the earlier trucks was that the filler neck angle was just too sharp at the top. Gas nozzles wouldn't even fit all the way in. This is more of a problem here in California with the stupid rubber cone on the pump nozzles. If they aren't compressed, no gas. So, like said earlier, either turn the nozzle upside down or shove a funnel in the neck and hold the rubber cone up with your hand. I have this same problem with my 1968 Firebird when I fuel up.
Wait, so why wasnt there a recall on this back in the day?
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline chevybones87

  • Newbie
  • Posts: 18
  • Newbie
Re: Filler neck trouble!
« Reply #26 on: November 29, 2015, 08:23:10 PM »
Even upside down pukes.. I believe its BC the pumps are so much faster now maybe...

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #27 on: November 29, 2015, 08:26:12 PM »

I havnt tried upside down yet, but will next fillip
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13319
  • Family is not an important thing. It's everything.
Re: Filler neck trouble!
« Reply #28 on: November 30, 2015, 12:45:31 AM »
i drilled out my gas filler neck to accommodate for the diesel pumps bigger nozzle. ow granted they dont have all the epa BS that the gas nozzles have, but i fill up at a truck stop and it pumps the fuel out pretty fast and i dont have a problem with it. if i can remember right when it was still the gas motor i did have problems with it
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline philo_beddoe

  • Senior Member
  • ****
  • Posts: 2734
  • 77 C-10
Re: Filler neck trouble!
« Reply #29 on: November 30, 2015, 09:08:16 AM »
I may try a flex and eliminate the elbow.
Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.  Zechariah 14:1