09 mercury mariner. If the Fuel evap canister has fuel in it, Can it be dump out

What is your question?

Was showing code 455 and 457 codes, I replace the fuel door for a bad gasket and I replaced the purge valve on engine. 3.0 eng, I have been driving it and there is no codes yet but the only thing that it has not ran on the computer yet is evap . Still Waiting.

What makes this problem better or worse?

Nothing