Most models of the Mercury Tracer--like its counterpart, the Ford Escort--do not use a standard fuel filter mounted in or near the fuel tank, but rather, they use an inline version mounted in the front within the engine compartment. Unlike many other vehicles, this filter is designed to last indefinitely and you won't need to replace it on a regularly scheduled basis. Only replace the filter if you believe it is clogged.
Deactivate the fuel inertia switch while the engine runs, inserting a screwdriver into the switch's slot to pry up its red button. Wait for the engine to stall, relieving the fuel pressure.
Place a gas can on the ground below the fuel filter, which is near the firewall in the engine compartment. Fuel will spill out when you disconnect the filter.
Disconnect the hairpin clip from the upper fuel line's connector and then push the fuel line hose from the fitting.
Loosen the clamp on the fuel filter with a screwdriver.
Raise the Tracer's front end with a floor jack and support it on jack stands.
Disconnect the hose at the bottom of the fuel filter, removing its hairpin clip like the earlier one.
Lift and remove the filter from the car.
Install the replacement fuel filter within its bracket and clamp, tightening the clamp.
Connect both the lower and upper fuel line hoses to the filter using the hairpin clips.
Lower the car off the jack stands using the floor jack.
Push the red button on the fuel pump inertia switch, re-activating the fuel pump and pressurizing the fuel system.
