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- 2003 Mazda Protege5
I've replaced the following parts on my 03 P5, Vapor Canister purge valve and the check valve attached to the gas tank and brand new OEM gas cap. I sometimes still get the odor of gas and now I'm getting codes P0421 and P0455, what else should I be looking at now? I will have to get the smog done next yer so I want to get this out of the way before then. any help is appreciated.
