Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Re-fueling problem

Thread Tools
 
Search this Thread
 
Old Apr 4, 2026 | 03:33 PM
  #1  
john dicarlo's Avatar
Thread Starter
Teching In
 
Joined: Apr 2021
Posts: 10
Likes: 0
Default Re-fueling problem

Maybe this isn't the right forum, because my question isn't about go-fast fueling, it's about getting gas into the gas tank of my 2002 SS. When I start fueling the gas nozzle clicks off almost immediately. I have to put the gas in very slowly, and I mean very slowly. Thinking maybe it's the gas tank vent which would mean pulling down the gas tank. Maybe there's other things I could try to fix this problem? Any suggestions would be greatly appreciated.
Reply
Old Apr 4, 2026 | 03:44 PM
  #2  
Tommy42088's Avatar
TECH Fanatic
Photogenic
Shutterbug
Liked
Loved
 
Joined: Oct 2022
Posts: 1,779
Likes: 629
From: Louisiana
Default

Sounds like evap solenoid or maybe charcoal canister.
Reply
Old Apr 4, 2026 | 07:12 PM
  #3  
RPM WS6's Avatar
LS1Tech Administrator
20 Year Member
Shutterbug
Community Builder
Community Influencer
iTrader: (3)
 
Joined: Nov 2001
Posts: 34,632
Likes: 2,558
From: Schiller Park, ILL Member: #317
Default

This has been a semi-common problem plaguing 4th gens for a long time. Some folks have found that sticking a straightened coat hanger wire down the fill neck will allow them to push the flapper back down and allow for normal fueling. Just be careful when doing this if you have already added some fresh gas, as any fuel that might still be in the neck will come squirting back out when tank pressure is released.

The issue seems to be poor tank venting (thus pressure build-up), but no one single cause has ever been identified as the primary problem in all cases. Normally this condition is triggered by allowing the tank to run below a certain point (sometimes below 1/4, sometimes even higher), so if you refuel at 1/4 or 1/3 tank or higher it's not usually a problem.
Reply
Old Apr 6, 2026 | 12:29 PM
  #4  
john dicarlo's Avatar
Thread Starter
Teching In
 
Joined: Apr 2021
Posts: 10
Likes: 0
Default

Originally Posted by Tommy42088
Sounds like evap solenoid or maybe charcoal canister.
Thanks! I'll look into that.
Reply
Old Apr 6, 2026 | 12:31 PM
  #5  
john dicarlo's Avatar
Thread Starter
Teching In
 
Joined: Apr 2021
Posts: 10
Likes: 0
Default

Originally Posted by RPM WS6
This has been a semi-common problem plaguing 4th gens for a long time. Some folks have found that sticking a straightened coat hanger wire down the fill neck will allow them to push the flapper back down and allow for normal fueling. Just be careful when doing this if you have already added some fresh gas, as any fuel that might still be in the neck will come squirting back out when tank pressure is released.

The issue seems to be poor tank venting (thus pressure build-up), but no one single cause has ever been identified as the primary problem in all cases. Normally this condition is triggered by allowing the tank to run below a certain point (sometimes below 1/4, sometimes even higher), so if you refuel at 1/4 or 1/3 tank or higher it's not usually a problem.

Thanks for your response. I'll try that and see if I can correct the problem.
Reply




All times are GMT -5. The time now is 09:01 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE