Leaky fuel tank

[wy_white_wolf]

Hi all,

When I got the waggy I had to pull the tank. It appeared the front vent to the tank had a little leak but that wasn't the reason I pulled it. The rubber gasket appeared good so I tried some sealer on it and put It back together. Now it appears to be leaking again. When we fill the tank it leaks and stops after burning off the top of the tank.

Any oneelse have problems with the return vents in the fuel tank leaking. What did you do to fix it?

[Gwamp]

Drop tank, empty it and clean area very good with a wire brush or whatever you need to get the area clean. Then get some JB weld (slow setup kind) and apply liberally to the area. Then let set up for at least 48 hours. This should take care of any leak.

[wy_white_wolf]

I've used JB weld before on metal tanks but this is a 90 GW with plastic tank. Any flex in the tank would crack the JB weld then I'd really have a mess.

[flatbackdragon]

have you tried some rtv gasket type sealer that stays flexible? just a suggestion, haven't tried that yet myself, need to on wifes rad. overflow bottle, cracked may need to just replace that thing.

[wy_white_wolf]

I haven't found an rtv type gasket sealer that gas proof. I did use a gasket sealer that was supposed to be gas proof when I had the tank out before.

[Don S]

..
wy_white_wolf;
... The secret to J.B.Welding plastic is rough up the area with very rough sand paper or grinder (read as deep grooves) for a large area around the spot being repaired. I use a knife and scar the area. This will add the feature of a mechanical lock and be sure to clean the area.

... If you have a crack drill the ends and v-groove the crack. Apply the J.B.Weld and taper the thickness away from the spot being repaired. Properly mixed, J.B.Weld at 1/16th of an inch thick is quite flexible. Some times I add some very finely chopped up fiberglass and mix it into the J.B.Weld.
Read my post;
http://www.ifsja.org/ubb/ultimatebb.php?ubb=get_topic;f=3;t=015474;p=2

The mechanics I know always use new O-ring fuel tank seals… Cheap job insurance.

Good luck and http://www.michiganjeepers.com/forums/images/graemlins/wave.gif and … CUL.. Don S..

[brent]

#1)Consider everything above.
#2) When you're under there, spend 4-5 bucks and replace ALL the fuel lines as well as well as vent lines.
Just a little rubber got rid of chronic smell, and I had a leak at the electric fuel pump as well.--Brent