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Old 02-16-2021, 06:37 PM   #6
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Join Date: Jan 2006
Location: Cleveland, Oh
Posts: 680
Re: Vapor Canister Question

Originally Posted by diveplane View Post
what does that do anyway? do u need to replace that?
It's required for emissions. It collects fuel vapors and then peridocally releases them into the injection system to get burned instead of having them evaporate in the atmosphere.

You could technically vent the tank to the air but you'll have a fuel smell and depending on where you live, won't pass emissions inspection.

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1995 GMC Yukon 4dr 2wd 5.7 Vortec conversion, AAM TracRite
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