• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Gas Cap Issue

  • Thread starter Thread starter tx65coupe
  • Start date Start date May 8, 2009

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
May 8, 2009
#1
  • May 8, 2009
  • #1
I replaced the fuel filler neck and now the gas cop doesn't fit as well as it did before.

Is there anything I can do to stop my gas cap from sitting slightly crooked and touching the paint on one side?
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
May 8, 2009
#2
  • May 8, 2009
  • #2
New? Used? Repro? Is the seal on the cap uneven? The cap or filler may need a little careful mallet work on the inner lip to get the cap to seat evenly.
 

2nd Mustang

Founding Member
Feb 24, 2002
2,488
0
46
Southern California
May 8, 2009
#3
  • May 8, 2009
  • #3
My aftermarket locking gas cap never did sit correctly. It either shows the horse with the front hoofs up in the air or the horse is upside down. So much for quality control.

BTW, the original gas cap fits fine.
 

blown65

Founding Member
Jul 7, 1999
1,938
4
39
Queen Creek Arizona
May 8, 2009
#4
  • May 8, 2009
  • #4
New filler neck, new cap and mine did the same thing. Doesnt touch the paint, but its real close to it though.

At least I dont have to take it off anymore with the Fuel Cell in the trunk.
 
6

66Runt

Member
Jun 11, 2005
680
2
18
May 10, 2009
#5
  • May 10, 2009
  • #5
Just use two cork gaskets between the filler neck and the body panel. You'll see that every now and then on a restored Mustang. Works well, and very hard to tell.
 

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
May 12, 2009
#6
  • May 12, 2009
  • #6
2+2GT said:
New? Used? Repro? Is the seal on the cap uneven? The cap or filler may need a little careful mallet work on the inner lip to get the cap to seat evenly.
Click to expand...

The tank, filler, cap, etc are all reproduction parts.

I was afraid that might be the case, but Im concerned that then it will end up being all out of whack.
 

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
May 12, 2009
#7
  • May 12, 2009
  • #7
66Runt said:
Just use two cork gaskets between the filler neck and the body panel. You'll see that every now and then on a restored Mustang. Works well, and very hard to tell.
Click to expand...

Thats not a bad idea. I actually have another new gasket. I will try that tomarrow.
 

tx65coupe

Active Member
Nov 29, 1999
1,551
1
37
May 15, 2009
#8
  • May 15, 2009
  • #8
The gas cap fits with out touching the paint now. It still does not fit perfect, but it is much better. Thanks for the tips.
 
You must log in or register to reply here.

Similar threads

F
Difference between 83-86 EFI and 87-97 gas tanks?
  • ForeverDrivin
  • Mar 30, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
347
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Mar 30, 2026
ForeverDrivin
F
P
Resolved P0457 with intermittent fuel odor in cabin
  • PSKSAM2
  • Jun 3, 2025
  • SN95 4.6L Mustang Tech
Replies
3
Views
492
SN95 4.6L Mustang Tech Jun 5, 2025
Noobz347
L
1997 V6 Starting issue
  • leanzik04
  • Mar 20, 2026
  • SN95 V6 Mustang Tech
Replies
3
Views
277
SN95 V6 Mustang Tech Mar 20, 2026
Noobz347
M
01 mustang 3.8 fuel pressure issue
  • Mhaley2006
  • May 29, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
4
Views
302
1996 - 2004 SN95 Mustang -General/Talk- Aug 9, 2026
JohnKay
J
F
2004 Mustang GT – Fuel Pump Not Priming
  • Fayio
  • Apr 22, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
384
SN95 4.6L Mustang Tech Apr 27, 2026
n0v8or
N
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?