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Old 02-14-2017, 01:28 AM   #4
71CHEVYSHORTBED402
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Join Date: Feb 2009
Location: Northern Nevada
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Re: What's Evaporative Emission Control?

Quote:
Originally Posted by Boog View Post
Yes. All those fumes that would vent to the outside without the EEC system. What are you looking at in the catalog? Gas tanks? Engine vacume draws fumes from the tank through a vent line up to the charcoal canister then into the engine to burn rather than let them vent to the outside.
LMC catalog has a good blow up of the tank and lines.
Thanks for the responses. Shame LMC and everyone else doesn't sell a repro. canister. Someone could make a lot of money. I have two OEM, so okay, but the bottom rubber foam element wear out in these canisters.

I see EEC in the parts book on occasion, and the subject came up for a non-EEC gas cap.

Speak of gas caps, I haven't been successful with the following question. Do you use a vented cap with a functional vapor canister system? Also, I've read a post where the guy claimed some cap vents are one way. I believe he eluded to air entry, not vapor release. Thoughts?

I'd like to get the right cap to use with the canister. Thanks for any input.
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Tony

71 Custom Deluxe, SWB, 2WD, 402, A/C.

I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025
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