Guys I need help. I’m a pretty techy guy, but have never really gotten forums so please be patient I am a noob. I am just at my wits end. I just got a 2011 Santa Fe, 2.4L GLS with AWD from my father as a winter car. I love it, however the inspection is coming due and the **** check engine light is on reading P0455, emissions large leak/no flow. You can smell gas strongly inside the car at times after sitting and I do notice the fuel economy isn’t great but that could be so to the fact I do all city driving to work. I simply don’t know what to do. I’ve had the car up on the lift twice, looked at the charcoal canister, purge valve, everything looks fine, no holes, no leaks, no gas smell, no cracks, nothing. The only place you can faintly smell gas is the connection on the bottom of the tank from the end of the filler neck, going into the tank itself. But it’s tight, sealed you can just faintly smell gas. The filler neck looks sealed and fine, and yes I have replaced the gas cap with an oem replacement. Does anyone have any ideas? Someone said replace the purge valve, but I don’t wanna drop 40 bucks if there could be another place I haven’t checked yet. Was wondering if there could be anything on the top of the tank that’s a common problem? But I know pulling that down would be a pain in the butt. Any advice?