Jeep not taking gas - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 01-06-2017, 02:52 PM
Thread Starter
  #1
Jeeper
 
Join Date: Jul 2016
Posts: 69
Jeep not taking gas

EDIT: 2005 Wrangler
_________
I originally had the problem where the jeep would spit fuel when filling up so I was going to replace the fuel neck hose with the GM part but after doing some other work (replaced fuel pump) the jeep wouldn't take gas anymore. No amount of pumping slowly, tilting the hose, not putting the hose in all the way etc would make a difference. It would instantly click off when trying to fill up.

I'm thinking it was coincidence and the check valve is just stuck opened but I was doing some reading and some people mentioned it might be the evap canister.

I don't know much about the function of the evap canister except that it's supposed to allow gas fumes to go through it. Kinda makes sense since it sounds like pressure is building while fueling and then it kicks the pump off.

I don't want to drop the fuel tank again if I don't have to. I'm going to try to remove the fuel filler neck with the tank where it is and see if I can get something down into there to try un-sticking the check valve but now I'm worried the evap canister could be causing the issue.

When I tried to fill it up after the fuel pump replacement it clicked off a bunch of times as I tried to fill it in different ways (sideways, just the tip[heh], very slow and combinations of all). Eventually it will overfill, and then slowly drain back down into the tank so I stopped messing with it.

I ended up getting 10 gallons into it before it just wouldn't take anything else. It was quite empty when I started so it should have been ~ half full. The fuel gauge showed a little over that when I checked it so I'm of the mindset that it's not just full.

The entire fuel filler neck was replaced so I don't think it would be an obstruction from that, though I haven't inspected it.

Could the evap canister be causing a problem like this? Or possibly something else I'm not thinking of?

hrw4 is offline   Quote
Old 01-06-2017, 03:18 PM   #2
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Sinister6's Avatar
 
Join Date: Jan 2013
Location: Colorado Springs
Posts: 9,574
Quote:
Originally Posted by hrw4 View Post
EDIT: 2005 Wrangler _________ I originally had the problem where the jeep would spit fuel when filling up so I was going to replace the fuel neck hose with the GM part but after doing some other work (replaced fuel pump) the jeep wouldn't take gas anymore. No amount of pumping slowly, tilting the hose, not putting the hose in all the way etc would make a difference. It would instantly click off when trying to fill up. I'm thinking it was coincidence and the check valve is just stuck opened but I was doing some reading and some people mentioned it might be the evap canister. I don't know much about the function of the evap canister except that it's supposed to allow gas fumes to go through it. Kinda makes sense since it sounds like pressure is building while fueling and then it kicks the pump off. I don't want to drop the fuel tank again if I don't have to. I'm going to try to remove the fuel filler neck with the tank where it is and see if I can get something down into there to try un-sticking the check valve but now I'm worried the evap canister could be causing the issue. When I tried to fill it up after the fuel pump replacement it clicked off a bunch of times as I tried to fill it in different ways (sideways, just the tip[heh], very slow and combinations of all). Eventually it will overfill, and then slowly drain back down into the tank so I stopped messing with it. I ended up getting 10 gallons into it before it just wouldn't take anything else. It was quite empty when I started so it should have been ~ half full. The fuel gauge showed a little over that when I checked it so I'm of the mindset that it's not just full. The entire fuel filler neck was replaced so I don't think it would be an obstruction from that, though I haven't inspected it. Could the evap canister be causing a problem like this? Or possibly something else I'm not thinking of?
You don't have to remove or drop tank for filler hose. Remove the filler hose, there is a small 3/8" hose/tube attached to the the hardware for the filler hose, tank end. Attach a small hose to this and blow it out. Re-attach everything and take should fill up. I had same problem...fixed it.
DO NOT TOP OFF TANK!

__________________
John
The Wolf is not concerned with the opinion of sheep.
MY BUILD: :
https://www.wranglerforum.com/f322/s...ad-235526.html
Sinister6 is offline   Quote
Old 01-06-2017, 03:24 PM   #3
Jeeper
 
Join Date: Jul 2016
Posts: 244
neo-fight is offline   Quote
Sponsored Links
Advertisement
 
Old 01-06-2017, 04:08 PM
Thread Starter
  #4
Jeeper
 
Join Date: Jul 2016
Posts: 69
thanks guys.

I never top off the tank. Never have on any of my vehicles. Once it "clicks" at the pump, it's done. This time however, I let it click a bunch of times because it wasn't full. I am a bit worried fuel could have back tracked down the vapor line or something since it's not working properly.

Thanks for that link. The picture/diagram in there helps a lot.
hrw4 is offline   Quote
Old 01-06-2017, 06:17 PM   #5
Jeeper
 
LJ Dave's Avatar
 
Join Date: Jan 2014
Location: Pine, Colorado
Posts: 1,975
I doubt it's just a coincidence. You know you had the sticking poppet valve problem that nearly all 05-06 TJs have before you started. It was stuck open causing gas to spew out when you filled up. The most likely cause of your problem with it not taking gas now, is that the same sticking poppet valve has shifted, probably when you dropped the tank, and now it's stuck in the closed position. I've seen this happen on other TJ/LJs where the valve was stuck open for 2 years and then one day moved and stuck closed.
If I were in your shoes, I'd start by removing the fuel filler hose, install the GM check valve while you are in there, and use a long screw driver to jam the poppet valve back open. At least this fix only costs $20 for the GM check valve and takes about 30 minutes to do. If that doesn't work, then I'd start looking at other things like the fuel tank venting system, but since you know for sure you already had the sticking poppet valve, it makes sense to start there.
__________________
_____________
2005 Rubicon LJ, 4.5 lift, 35's
LJ Dave is offline   Quote
Reply

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 12:53 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.