Fuel Filter: Service and Repair

FUEL FILTER

911 Models
1. Disconnect battery ground cable.
2. Using suitable back-up wrench to hold filter fittings, disconnect fuel lines. Allow escaping fuel to drain into suitable container.
3. Loosen filter clamp, then remove fuel filter.
4. Noting direction of fuel flow, install replacement filter.
5. Connect battery ground cable, then start engine and check fuel lines and filter for leaks and correct as necessary.




OXYGEN SENSOR

911 Models
1. Locate oxygen sensor plug (left side of engine compartment, just below the ignition coil).
2. Disconnect electrical connector from plug, then push grommet and plug through grommet hole.
3. Raise and support vehicle.
4. Remove left rear wheel, then exhaust shield.
5. Locate oxygen sensor on exhaust manifold, remove safety plug from sensor, then the sensor.
6. Coat threads of new sensor with anti-seize compound, using care not to get any in the sensor slots, then install sensor.