2010 2.5L 4 door hatchback base. Some history, I bought the car at auction with 35K on it about 6 years ago. Front end collision. Just recently rebuilt the front end, including smashed intake and some other plastic engine bits, so it sat for 5.5 years. It runs fine, but I can't get any fuel into the tank. Fuel goes in for about a second, and then it backs up the filler pipe. I know there are various check valves and emmisions stuff, but where to start? Any thoughts? Thanks.