1997 Intrepid 3.5L.

I love the car! Now, after 130 kMiles it starts acting-up.... Every so often 'check engine' light goes on with the code reading '43'. I replaced the coil, ignition wires, spark plugs, and injector on cylinder #5. Nothing helped.... I also smell raw gasoline and exhaust(?) fumes while driving.... I checked PCV and EGR valves and they seem to work fine. Any suggestions, PLEASE??