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Old 07-05-2022, 08:28 PM   #6
1970GMC350
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Join Date: Mar 2020
Location: Nebraska
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Re: EEC Tank/Charcoal Canister Question

Quote:
Originally Posted by Steeveedee View Post
OK, I wasn't clear on the vent line. It's inside the b-pillar, if it is still there. The vent line goes up inside the pillar as a standpipe to keep liquid fuel from reaching the canister. If there is only the one line from the tank, you will need a vented cap, as the vapors have no place to go otherwise.
Thank you for your help! I think the “vented” Stant gas cap I bought isn’t actually venting at all. I just tried sucking air through it for the hell of it and it is basically sealed compared to my old one.
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70 GMC 1500 Sierra - Original paint, mostly original 350 and TH350
86 Honda ATC200X Three Wheeler
10 Dodge Ram 1500
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