1. Have been having hard start for months. For a few weeks had only one code "P0455" did gas cap checked all lines. Keeps coming back with the smell of gas under car by tank muffler area.

This weekend drove 200 miles on the way home check engine light came on with code P0171. I noticed when I got back into town the car was idling kinda of rough but ran good other than that. smell like gas with car running too.

New plugs and wires , no exhaust leaks, coils packs, rebuilt head 4 years ago, fuel pump new.

Just seeing what opinions I get. Thanks for any help!