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HOMESERVICE MANUALSLINCOLN2009NAVIGATOR L RWDREPAIR AND DIAGNOSISENGINE PERFORMANCEFUEL DELIVERYFUEL SYSTEM - GENERAL INFORMATIONDESCRIPTION AND OPERATIONFUEL SYSTEMNOTES
2009 Lincoln Navigator L RWD

Fuel System: Notes

2009 Lincoln Navigator L RWDSECTION Notes

The fuel system consists of the following:

  • Fuel rail
  • Fuel injectors
  • Fuel tank
  • Fuel Pump (FP) module (located in the fuel tank)
  • Fuel filter, 127L (33.5 gal)
  • Fuel supply tube
  • Fuel return tube, 127L (33.5 gal)
  • Easy Fuel™ (capless) fuel tank filler pipe assembly (which cannot be modified)
  • Lifetime fuel filter (serviced as part of the FP  module, 106L (28.0 gal)
  • Supplemental refueling adapter located in the spare tire compartment
  • 2-speed Mechanical Returnless Fuel System (MRFS)

The vehicle is equipped with a Multi-Port Fuel Injection (MFI) system.

Fuel delivery is accomplished through a MRFS  .

  • The FP  supplies the fuel injectors with pressurized fuel through the fuel rail.
  • The fuel injectors are separately controlled and mounted to the intake manifold for each cylinder.
  • The fuel tubes route the fuel from the fuel pump to the fuel rail.
  • The fuel filter cleans the fuel delivered from the FP  to the fuel rail.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.