Recently ive been smelling fuel everytime i drive my car and my economy has dropped by ~5 mpg. I have inspected all of the fuel lines and they are all in good condition except for the EVAP line in the engine bay that has a little bit of play to it. Could this problem be caused from a faulty charcoal canister? Or something else? It doesn't seem like a good thing to be driving on at the moment. Thanks for your guys help.