Evaporator Canister...?

Hey , as i was Lookin around My cars engine compartment i found the evaporator canister. i found it with 2 hoses connected to it , "tank" and "purge" . my question is , is there suppose to be a hose connected to the valve labeled " air " and if so where is it connected to? Because mine is empty.

Welcome to AF and this car is?, also there should be an emissions label under the hood showing those hose connections

the car is a 1993 buick lesabre , has a couple more issues i need to address on the forum to :)

this is what im talking about
http://i13.tinypic.com/486gy6d.jpg

I checked my 93 and it's like yours with just the two hoses. There is also an underhood label which shows just two hoses going to the canister. I suspect that on some applications, this canister air port might be connected to the air filter.

My EVAP canister air port has a small plastic fitting on it (not airtight) whose purpose, I guess, is to keep out large dirt particles but still allow air to enter the canister.

Checked my '92 park avenue and '93 LeSabre, both have only the two hoses like yours!

Thanks everyone! puts me in a more comfortable state!