# My gas cap failed the leak test: is there any hope for it? **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [February 16, 2019, 7:09pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757 "2019-02-16T19:09:48Z")\ **Posts on this page:** 7\ **Page:** 3
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [February 22, 2019, 5:52pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/41 "2019-02-22T17:52:51Z")
> [@TwinTurbo](#): > > What do you think of the modern capless designs? I have that on our Ford Fiesta . I like the fact that I just open door and put fuel in. About future problems only time will tell . ---
**Author:** ![StuartBuncher](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@StuartBuncher](https://community.cartalk.com/u/StuartBuncher)\ **Post date:** [February 22, 2019, 11:06pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/42 "2019-02-22T23:06:53Z")
There isn’t any pressure. There is however a vacuum so the fumes don’t escape. ---
**Author:** ![Whitey](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/whitey/32/24680_2.png) [@Whitey](https://community.cartalk.com/u/Whitey)\ **Post date:** [February 22, 2019, 11:12pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/43 "2019-02-22T23:12:10Z")
> [@TwinTurbo](#): > > What do you think of the modern capless designs? I rented a car that had that. It was weird, but you get used to it quickly. ---
**Author:** ![StuartBuncher](https://avatars.discourse-cdn.com/v4/letter/s/bbce88/32.png) [@StuartBuncher](https://community.cartalk.com/u/StuartBuncher)\ **Post date:** [February 22, 2019, 11:23pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/44 "2019-02-22T23:23:58Z")
In NJ our inspection centers are free. You can go to a private garage which is certified by the State and pay. At the station they put a vacuum on the cap and if it holds the cap passes. They also plug the OBD II into the port and look for codes. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [February 22, 2019, 11:38pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/45 "2019-02-22T23:38:41Z")
> [@RandomTroll](#): > > I like to fix things. Please let us know when you figure-out how to “fix” an aged gas cap, and please be sure to include technical details for anyone who wants to pursue that route. ---
**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\ **Post date:** [February 25, 2019, 7:09pm UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/47 "2019-02-25T19:09:20Z")
None of which is applicable with the OP’s 1987 pick-up truck as it’s not OBD II… ---
**Author:** ![Cristram19\_148770](https://avatars.discourse-cdn.com/v4/letter/c/57b2e6/32.png) [@Cristram19\_148770](https://community.cartalk.com/u/Cristram19_148770)\ **Post date:** [February 26, 2019, 6:34am UTC](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757/48 "2019-02-26T06:34:56Z")
I don’t trust stores I remember I bought 3 gas caps and they kept saying it was gas cap with the check engine light [Previous page](https://community.cartalk.com/t/my-gas-cap-failed-the-leak-test-is-there-any-hope-for-it/134757.md?page=2)