Here is a step by step guide on how to replace the fuel filter:
1. Park the car on a level surface, and turn off the engine.
2. Engage the parking brake.
3. Locate the fuel filter under the car, behind the driver's-side rear tire.
4. Place a drip pan under the fuel filter to catch any spilled fuel.
5. Use a 17mm wrench to loosen the fuel line nuts on both ends of the fuel filter.
6. Pull the fuel lines off the fuel filter.
7. Remove the old fuel filter by turning it counterclockwise.
8. Apply a thin coat of petroleum jelly to the O-rings on the new fuel filter.
9. Install the new fuel filter by turning it clockwise until it is snug.
10. Reattach the fuel lines to the fuel filter and tighten the nuts until they are snug.
11. Start the engine and check for leaks.
That is how you can replace the fuel filter on a 1998 Jaguar XJS.
