Chevrolet Repair: 1995 Chevy Cavalier, gas vapors, chevy cavalier

Question
I continue to smell gas vapors around my engine block. I took the car to the dealer and they inspected it and could not find any visible gas leaks but could smell the fumes. The vapors only seem to appear after I have driven the car then park it for a while. The fuel injectors have been tested and are not clogging and/or leaking. Your help would be appreciated.

Answer
The vapor recovery canister could be saturated, and is possibly not purging.
There is a solenoid valve that should open, and allow the accumulated vapors to be drawn into the engine and burned.
Check the condition of all the hoses to the canister, as well as the vacuum hoses.

Van