Here's an odd one for you guys. Ever since I got my car back after the accident I've had a CEL for bank 1 lean, Evap flow when not commanded, and excessive evap flow. Also I would get the "check fuel cap" message periodically. It also showed an increase of over 2mpg. Yesterday when I topped up my fuel tank the fuel splashed back all over me and the car which forced me to look closely at the filler tube and I noticed the little flapper at the top of the tube is completely missing. I can only assume this was dislodged during the accident. So now the big question, How in the heck do I fix it? I'm sure that I can figure out how to replace the filler neck and have a flapper again but where oh where did the original part go? Should I pull the fuel pump and go fishing? Is the tank baffled so that I'll never retrieve the pieces? Is there any kind of trap in the filler that could have caught the parts? Should I not even worry about it? Totally wandering around in the dark on this, I've never even heard of this before. Any help is most appreciated! Thank you.