Fuel tank issue question - Page 2 - MustangForums.com

Go Back  MustangForums.com > Ford Mustang Tech > 2005-2014 Mustangs
Reload this Page >

Fuel tank issue question

Notices
2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Fuel tank issue question

Reply

 
 
 
Old 08-03-2010, 04:33 PM
  #11  
nemosgt
2nd Gear Member
 
Join Date: Oct 2009
Location: Ontario
Posts: 238
Default

Maybe it's a cheeseburger blocking the way!
I know. No help at all.

Guess not being able to gas up is not part of the 5 year powertrain warranty. Jeez.

Cheers.
nemosgt is offline  
Reply With Quote
Old 08-03-2010, 05:02 PM
  #12  
marcuskeeler
5th Gear Member
Thread Starter
 
marcuskeeler's Avatar
 
Join Date: Sep 2006
Posts: 3,401
Default

Originally Posted by nemosgt View Post
Maybe it's a cheeseburger blocking the way!
I know. No help at all.

Guess not being able to gas up is not part of the 5 year powertrain warranty. Jeez.

Cheers.
It's got to be something obvious. I mean, to not be able to get anything in the tank isn't a partially blocked filter. My last effort is to remove the whole filler neck from quarter panel to tank.
I took the filler pipe off the tank and had a 'finger' round in the top of the tank connection, the little flapper in the top of the tank is there and swings freely so I can't see it being the problem.

The LAST time it filled properly was at Mosport when I had it filled up at the on track gas bar. I mentioned to the guy that the filler might be a little temperamental and it might not, dependent on his pump. "Oh, I filled a hundred of these things, I know the trick". Well, he filled her alright and he's the last person to do it, I'm wondering if he's damaged something at the upper part of the neck by ramming the pump head in...... I dunno...
marcuskeeler is offline  
Reply With Quote
Old 08-03-2010, 05:32 PM
  #13  
90stang5.0
2nd Gear Member
 
90stang5.0's Avatar
 
Join Date: Dec 2006
Location: Ohio
Posts: 166
Default

That sucks. If it were mine, I think I would drop the tank, pull out the filler neck and examine everything. A lot of work I know, but cheaper than taking it to the dealer. Mine is a little finicky at times, but yours sounds like a real problem. To work one day and not the next seems a little suspicious to me.
90stang5.0 is offline  
Reply With Quote
Old 08-03-2010, 07:10 PM
  #14  
balls8302
1st Gear Member
 
balls8302's Avatar
 
Join Date: Dec 2008
Location: IN
Posts: 99
Default

funny you posted about this dilemma as i about went crazy last night at a gas station. my car is also a 06, told the dealer to take care of that tsb when i had the passenger airbag tsb done. they said that my tank was fine but its kept happening ever since. took me about 25 minutes last night to put 8 gallons in. my car doesn't seem to do it as much as you say your's does. mine will be fine for a week or two then it doesn't matter where i'm fueling it will act up and not let me fuel... i'm book marking this in hopes someone figures it out... good luck
balls8302 is offline  
Reply With Quote
Old 08-03-2010, 07:49 PM
  #15  
Nuke
6th Gear Member
 
Nuke's Avatar
 
Join Date: Jun 2007
Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
Posts: 16,186
Default

The fix per the TSB often doesn't fix the problem. Quite a few that have had the dealer perform the TSB claim to have continued having the problem. FWIW...
Nuke is offline  
Reply With Quote
Old 08-04-2010, 08:50 AM
  #16  
marcuskeeler
5th Gear Member
Thread Starter
 
marcuskeeler's Avatar
 
Join Date: Sep 2006
Posts: 3,401
Default

I'm resisting dropping the tank at this time. It's such a big job and I don't really want to disturb the pump connections. I'm going to have a go at the filler neck today, see if there's an obstruction or something.
marcuskeeler is offline  
Reply With Quote
Old 08-04-2010, 09:55 PM
  #17  
Rubrignitz
5th Gear Member
 
Rubrignitz's Avatar
 
Join Date: Jul 2007
Location: TX
Posts: 4,897
Default

Not to mention a messy job. I hate swapping my fuel filter, gas smell lingers FOR-EVER. At least you have a garage lift Marcus. Things could be worse .

there's normally a check ball in the fill tube to prevent spills in case of a roll-over accident. may have gotten stuck in the fill pipe, blocking it off. you said you tried shoving something down the filler neck?
Rubrignitz is offline  
Reply With Quote
Old 08-05-2010, 12:15 AM
  #18  
marcuskeeler
5th Gear Member
Thread Starter
 
marcuskeeler's Avatar
 
Join Date: Sep 2006
Posts: 3,401
Default

Originally Posted by Rubrignitz View Post
Not to mention a messy job. I hate swapping my fuel filter, gas smell lingers FOR-EVER. At least you have a garage lift Marcus. Things could be worse .

there's normally a check ball in the fill tube to prevent spills in case of a roll-over accident. may have gotten stuck in the fill pipe, blocking it off. you said you tried shoving something down the filler neck?
Hmmm, there is eh? Ok, although I didn't have any time today I'm defo gonna rip that fuel filler neck out and have a deep and meaningful discussion with it.
i did shove a stiff wire (Coathanger) down the thing and encountered something although i not sure that it wasn't just a bend which I couldn't navigate round.
marcuskeeler is offline  
Reply With Quote
Old 08-11-2010, 02:17 PM
  #19  
marcuskeeler
5th Gear Member
Thread Starter
 
marcuskeeler's Avatar
 
Join Date: Sep 2006
Posts: 3,401
Default

OK> Latest update.
So I pulled the filler neck loose and had a looky.

Now, i don't know much about filler neck technology but I can say right now, I see why Mustangs have that generic filling gulp gulp issue at the gas station.

The filler neck travels downward, loops under the frame rail, and then travels back UP to go over the axle tube. It hugs the bottom of the trunk floor before then dipping down into the tank. So right there you have an issue, the gas pump has to pump the gas UPWARD which is why most pumps click off all the time (They have a pressure sensitive cutout switch).
When I removed my filler neck and blew it through with an airline to check for flow, I had about a pint of gas, which was stuck between the gas neck and the high point of the neck pipe, fly across the garage......... Nice. It's like, in a way, the u-bend under a sink.
So anyway, I blew the filler neck through and found no obstruction, there isn't a non-return valve in there either, so that's not the problem.

So into the tank. The non return valve thingy in the tank seems to be working fine. just the slightest of pressure from my Saturday-night-finger was able to push it down and allow gas to enter the tank.

The pressure vent tube on the other side of the tank is unobstructed too. I was able to blow air into the tank on the fill side and felt the air displace out the vent tube system on the other. In fact, not that I even have half a clue about how that air displacement canister setup under the trunk works, but the displaced air did travel all the way through the system, when reattached, and vent out it's exhaust (above the axle on the passenger side) although I did feel some level of resistance there.

I had some hope before, but I really have no clue why my tank refuses to fill now. OK, I didn't try it after this strip and reassembly, but I didn't actually do anything so nothing has changed.

The U-Bend thing on the filler neck does **** me off somewhat, I can see that is a problem but again, it was always like that so I guess it isn't my problem as such.
marcuskeeler is offline  
Reply With Quote
Old 08-11-2010, 02:53 PM
  #20  
Rubrignitz
5th Gear Member
 
Rubrignitz's Avatar
 
Join Date: Jul 2007
Location: TX
Posts: 4,897
Default

Just yank the damn thing and install a fuel cell in the trunk. Convert your GT badge to a filler. Lighter and safer ;-).

So no obstruction yet no filly-up. Very odd indeed. I believe it's time for a trip to the dealership.
Rubrignitz is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
vbonina
V6 (1994-2004) Mustangs
7
07-22-2018 08:12 AM
Calizic
4.6L (1996-2004 Modular) Mustang
5
08-28-2015 01:46 PM
1st 4 eyed fox
General Tech
2
08-24-2015 06:56 PM
djbigskrilla
2005-2014 Mustangs
13
08-11-2015 12:59 PM
Mnuckolls
4.0L V6 Technical Discussions
3
08-09-2015 08:54 AM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory