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Aux Fuel tank

CopperBronco

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Newbie
Joined
Aug 13, 2021
Messages
200
Need some advice, been punting on fixing this. My aux gas tank has a small leak from the fill tube at the tank. I put T style hose clamp on this, and it still leaked. The problem stems from my bad floor installation, the front driver floor pan is installed an inch too high or so…this causes the fill tube to come into gas tank at greater angle than it should and unable to clamp down fully secure.

Curious how you’d fix? Fixing the floor seems like a BIG job that I’m not up for right now. Is it too unwise to essentially shim the gas tank between floor panel and aux tank, and extend the gas tank bracket that has the hold down clips? Just thinking how to Mcgyver this…. Unfortunately someone took the time to replace my floor pans but didn’t do it right… 🙄
 

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Last edited:

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
43,551
Got a picture of the offending angles? I think I hear what you’re saying, but it’s hard to see how that happened.
Maybe it’s as simple a fix as a longer hose or different curves?
 

Rustytruck

Bronco Guru
Joined
Feb 24, 2002
Messages
10,824
sounds like you may have to get a filler tube and cut it and change the length and re weld or put a rubber section in. That would get the length where you need and add flexibility, shouldn't be too hard to find a used tube to chop up. save your old tube for when you fix the floor properly.
 
OP
OP
C

CopperBronco

Contributor
Newbie
Joined
Aug 13, 2021
Messages
200
Got a picture of the offending angles? I think I hear what you’re saying, but it’s hard to see how that happened.
Maybe it’s as simple a fix as a longer hose or different curves?
I added photos above of fuel tank underneath, and also of my rocker panel to floor connection, you can see how far it is off… by comparing to the Bronco being built and primered, they lip between the rocker and floor pan is even and much thinner across whereas mine starts to get fatter towards the front showing how floor is installed too high… I also had to shim my passenger side roll cage mount so that it would lineup with driver side, another sign they did it wrong…
 
OP
OP
C

CopperBronco

Contributor
Newbie
Joined
Aug 13, 2021
Messages
200
sounds like you may have to get a filler tube and cut it and change the length and re weld or put a rubber section in. That would get the length where you need and add flexibility, shouldn't be too hard to find a used tube to chop up. save your old tube for when you fix the floor properly.
It does have a rubber tube that connects filler tube to aux tank… or maybe I’m just a dummy… is there a sealant or something I should put inside rubber tube when hooking up… I forgot that I couldn’t get T clamp on their because of such a tight space… forgot that didn’t work.
 
OP
OP
C

CopperBronco

Contributor
Newbie
Joined
Aug 13, 2021
Messages
200
Just curious if anyone has thoughts here if an extended aux tank bracket is a bad idea. or to Rustytrucks point just get a longer rubber tube? Are there any safe sealants for gask tanks I could put around outside of it where tube attaches?
 
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