Gas Leak From aux?

[American Pride]

Well as i was filling up i stoped and a few seconds later, gas was pooring under the d/s door. (i only have the aux tank) i drove home and it was not leaking anymore. is this the sign of a hole in the tank?

 

[Naildriver111]

The vent hose on mine was cracked, and it too only leaked after filling it up. I couldn't find any fuel line hose large enough to fit it, so I opted for some clear solvent proof hose at the local hardware. I hope your leak will be that simple to fix. ;D

 

[MarsChariot]

There are four principal sources for leaks from aux tanks: (1) the vent hoses (as noted), (2) the seal on the sender unit, (3) the filler hose can become old and cracked [all the cracks and seals can be just fine cracks and leak only under load, or seep with time under the fluid level, so they can be a bear to detect], and (4) the tank, if original, can be poly material which itself can develop cracks near the top, that again, leak only when completely full. The quickest and most final solution is to get a new tank and replace all the seals and lines when you replace it. That is what I had to do. Leaked for about 15 years off and on. I kept hoping it was line or that seal. Then by accident noticed that it was the actual tank that had a crack near the top. Replaced it and all lines and seals, and now there is absolutely no more leaks.

 

[tml]

Don't do what I did. I drilled A hole through the aux tank when installing my weather stripping at the bottom of the doors in the door chanel. A little screw and JB weld, good to go.

 

[72Sport]

Darn late again. I wanted to add principal reason #5 to tml's list.

Someone tried to sell me a tank that had all the holes drilled in it to install the metal strips to hold the carpet down or maybe the weatherstripping not sure which. I didn't buy it

 

[Broncitis]

There are four principal sources for leaks from aux tanks: (1) the vent hoses (as noted), (2) the seal on the sender unit, (3) the filler hose can become old and cracked [all the cracks and seals can be just fine cracks and leak only under load, or seep with time under the fluid level, so they can be a bear to detect], and (4) the tank, if original, can be poly material which itself can develop cracks near the top, that again, leak only when completely full. The quickest and most final solution is to get a new tank and replace all the seals and lines when you replace it. That is what I had to do. Leaked for about 15 years off and on. I kept hoping it was line or that seal. Then by accident noticed that it was the actual tank that had a crack near the top. Replaced it and all lines and seals, and now there is absolutely no more leaks.

#6:

The pickup tube that is soldered through the sender baseplate can crack at the solder joint. I've fixed these simply be removeing the sender unit, cleaning with plumbers flux and re-soldering with torch.

 

[TXHusker]

I replaced my sending unit, now I can't stop it from leaking around the sending unit seal. Any suggestions? I used clear silicone, but not sure if that's the best option

Thanks

 

[tml]

I replaced my sending unit, now I can't stop it from leaking around the sending unit seal. Any suggestions? I used clear silicone, but not sure if that's the best option

Thanks

Had the same problem. I used a little dab of crazy glue around the rubber seal to keep it in place when installing it. It will have a tendency to move about while turning the lock ring into place. Make sure it's tight in there.