To locate it, you'll need to:
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1984 Chevy Celebrity is your best bet. These manuals will have diagrams showing the exact location.
* Look carefully along the fuel lines: Trace the fuel lines from the tank towards the engine. The filter will be a cylindrical canister within the line. It might be metal or plastic.
Safety First: Before attempting any work under your car, ensure it's securely supported on jack stands. Fuel is flammable, so be careful to avoid sparks and open flames. Consider relieving pressure in the fuel system before working on the fuel lines.