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Evap Canister? What Is It For?

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I'm Curious. What does the evap canister do? I have a 91 LS400 and the canister is rusting on the bottom and it smells like gas. What's up?



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it is a charcoal canister that is used to trap gas vapour until the engine sucks it back in so it does not go into the enviormentas part of emmision controls

get a new one as it should increase your mileage as you aren't evaporating fuel in the air

or possible going to start a fire

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