Tata Motors recommends replacing the fuel filter in your Land Rover Discovery every 12,000 miles (19,312km) or 12 months. Small particles clog the filter element after prolonged service, reducing fuel pressure and flow to the fuel injectors, eventually affecting engine performance. Overlooking this part of your Discovery's fuel system maintenance schedule may leave you stranded in the middle of the road. Avoid road headaches now by installing a new fuel filter in your Land Rover using a few simple tools.
- Skill level:
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Things you need
- Floor jack
- 2 safety stands
- Flare wrench
- Shop rag
- Short ratchet extension
- 2 new O-rings
- Clean engine oil
Park your Land Rover on level ground and remove the fuel pump fuse from the fuse box underneath the dashboard. Start the engine, let it stall and turn off the ignition switch.
Jack up both rear wheels off the ground with a floor jack, if you need extra space to work under the vehicle. Support the vehicle with two safety stands.
Work on either one of the fuel lines connected to the filter by holding the moulded nut at the end of the filter with a backup wrench and unfasten the line retaining nut with a flare wrench. Use a shop rag to absorb any residual fuel in the line. Disconnect the line on the other end of the filter using the same procedure.
Unfasten the bolt on the filter mounting bracket with a ratchet, short ratchet extension and socket. Note in which direction the arrow on the filter's body points to and remove the fuel filter from the vehicle.
Remove the O-rings from the fittings of the two disconnected lines. Coat two new O-rings with clean engine oil and install one on each of the line fittings.
Position the new fuel filter into the mounting bracket with the arrow pointing in the same direction as the arrow on the old filter was pointing and tighten the bracket bolt with the ratchet and socket.
Connect the fuel lines to the filter fittings by hand first to avoid stripping the fitting threads. Hold the filter moulded nut with the backup wrench and tighten the line retaining nut with the flare wrench.
Lower your Land Rover with the floor jack, if you had to raise it.
Replace the fuel pump fuse in the fuse box and turn the ignition switch on to pressurise the fuel system.
Check the two lines connected to the fuel filter for leaks and turn off the ignition switch.
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