# Gas tank leaks when gas is put in too fast **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [August 21, 2011, 8:29pm UTC](https://community.cartalk.com/t/gas-tank-leaks-when-gas-is-put-in-too-fast/67305 "2011-08-21T20:29:24Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![genjackson](https://avatars.discourse-cdn.com/v4/letter/g/65b543/32.png) [@genjackson](https://community.cartalk.com/u/genjackson)\ **Post date:** [August 21, 2011, 8:29pm UTC](https://community.cartalk.com/t/gas-tank-leaks-when-gas-is-put-in-too-fast/67305/1 "2011-08-21T20:29:24Z")
My parents have dumped a Ford E150 Explorer van on me to fix for them. Whenever they put gas in it too fast or fill it up more than about 2/3rds of the way full, it leaks near the back of the tank. I believed that it may have been the Charcoal Cylinder, but that theory was not correct. I really don’t want to drop the tank, but that is my next step. I don’t think that it is a hole, because it only leaks under certain conditions. Any ideas? ---
**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\ **Post date:** [August 21, 2011, 9:46pm UTC](https://community.cartalk.com/t/gas-tank-leaks-when-gas-is-put-in-too-fast/67305/2 "2011-08-21T21:46:27Z")
Filling up more than 2/3rds and leaking gas indicates a hole to me. You may not have to drop the tank, find the leak, rub some bar soap on it for a temporary stp leak if it is not under the strap. Find where it is leaking from and let us know. ps a lighter is not a good light source in this situation 🙂 ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [August 21, 2011, 10:13pm UTC](https://community.cartalk.com/t/gas-tank-leaks-when-gas-is-put-in-too-fast/67305/3 "2011-08-21T22:13:02Z")
There is a hole in the system somewhere, and it’s dangerous. Find it and fix it. This may indeed involve dropping the tank AND THE FILLER-NECK and replacing the damaged, worn, corroded parts. How OLD is this van?? ---
**Author:** ![genjackson](https://avatars.discourse-cdn.com/v4/letter/g/65b543/32.png) [@genjackson](https://community.cartalk.com/u/genjackson)\ **Post date:** [August 22, 2011, 1:47am UTC](https://community.cartalk.com/t/gas-tank-leaks-when-gas-is-put-in-too-fast/67305/4 "2011-08-22T01:47:52Z")
It’s not that old, I believe late 90’s. I don’t think it’s a hole in the tank because even with very little gas in the tank, something leaks when putting gas in too fast. I don’t know much about it though.