Your fuel filter is mounted on the rear of intake manifold, under air cleaner or on rear firewall.
Just a little hint on replacing it, remove your fuel tank cap to release pressure or vacuum in the tank. I'm sending you a diagram the fuel filter assembly so it will make it a little simpler for you to replace your fuel filter. Start by removing the filter element nut. Remove filter element by lifting straight out of filter housing. It is not necessary to drain fuel from filter housing when changing the filter element.
Installation, ensure mating surface between filter element assembly and filter housing is clean. Install new filter element by aligning widest key slot located under element assembly cap with widest key in filter housing assembly.
Tighten element nut by hand. Bleed air from fuel manager/filter assembly. Connect a hose to air bleed valve and place other end of hose in a container.
Disconnect fuel injection pump shutoff solenoid wire. Crank engine for 10 to 15 seconds. Allow starter to cool down for one minute between cranking intervals. Repeat procedure until clear fuel is observed at the air bleed hose.
Close air bleed. Connect injection pump shutoff solenoid wire and reinstall fuel filler cap. Start engine and allow to idle for five minutes. Check fuel manager/filter for leaks.