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Message: <blockquote data-quote="venom" data-source="post: 1105525" data-attributes="member: 9290">I ended up making a charcoal canister as I see many asking why does my garage smell like gas after they have done a fuel system.  Besides the obvious with leaks or hose permeation where gas is slowing eating away at the rubber inside the braided hoses the other one is the charcoal canister.  I made one out of a $10 sprinkler and charcoal from the pet store used in fish tanks. The basic concept is to have the vent line coming from the tank to one end of the container and the other end has to be opened for fresh air.  You can use a filter but I have seen many without a filter with a bunch of holes drilled out for fresh air intake so don't get hung up with finding a filter.  Once you have bottle and charcoal you will need some sort of mesh to prevent the charcoal from dropping out form either end.  I used the screen from a conical filter, you can use sink basket strainer.  Good news is that the large sprinklers use 1/2 NPT threads so I was able to reuse my -8an to 1/2 npt fitting. If you are using rubber hoses then just get the proper npt size with a barb end.  Unfortunately I forgot to snap a pic of the final product but you can get the idea by looking at the pics. As I mentioned before with e85 it may not be noticeable but with regular gas it is unbearable.  As a test I removed the canister and the fumes came right at me from the tank line however on the fresh air side I could smell anything.Large sprinkler head with AN to npt fitting<img src="http://i90.photobucket.com/albums/k245/venomstang/New build/5F39C860-FDFC-4A1C-8974-86EAB4722244-3422-000002EB8D3D076B_zps6ccc5ca1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Here is the sprinkler taken apart and cut up.  If you are not using a filter you need to retain the top and drill out holes<img src="http://i90.photobucket.com/albums/k245/venomstang/New build/392BFAAC-EF5B-4AF6-9738-35E07C53A29C-3422-000002EB939A1519_zps7c3b34b0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Old mesh from filter<img src="http://i90.photobucket.com/albums/k245/venomstang/New build/C5D273B7-41C9-440B-9DCD-072427CD66D6-3422-000002EB98ED098E_zps9c7de75c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Mesh on side to fuel tank <img src="http://i90.photobucket.com/albums/k245/venomstang/New%20build/48B24303-C713-4B56-9C50-40B13320ACE5-3422-000002EBA0143002_zpsb0b615a2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Filled up<img src="http://i90.photobucket.com/albums/k245/venomstang/New build/D4616F93-3414-4DEC-AE0A-98799AB71935-3422-000002EBA6991175_zps26f37ee7.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />Mess on top in order for charcoal not to go inside the filter, if you are not using a filter all you need is the mesh on bottom side plus drill out a lot of small holes on top but not to big for charcoal to get out.  If you want big holes then mesh will be needed to prevent charcoals from coming out.<img src="http://i90.photobucket.com/albums/k245/venomstang/New build/8D19E9C9-82FC-4FE9-8C8D-6EA8A610F436-3422-000002EBAF3BF9BA_zpsd2600ce9.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>