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Home >> Jaguar >> 2003 >> XJ8 Base >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - General Information (2003.5-09) >> General Procedures >> Fuel System Pressure Check

Fuel System Pressure Check

NOTE: This procedure is for the installation of the adaptor into the fuel line due to the removal of the schraeder valve from the fuel line.
    WARNING: Place the vehicle in a quarantined area and arrange "No Smoking/Petrol Fumes" signs about the vehicle.
    WARNING: Before any work is carried out on the fuel system, ground the vehicle to earth and maintain the ground connection until the work is complete.
    WARNING: Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel related components. Highly flammable vapors are always present and may ignite. Failure to follow these instructions may result in personal injury.
    WARNING: Do not carry or operate cellular phones when working on or near any fuel related components. Highly flammable vapors are always present and may ignite. Failure to follow these instructions may result in personal injury.
    WARNING: The fuel system remains pressurized for a long time after the ignition is switched off. The fuel pressure must be relieved before attempting any repairs. Failure to follow these instructions may result in personal injury.
    WARNING: This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury.
    WARNING: After carrying out repairs, the fuel system must be checked visually for leaks. Failure to follow these instructions may result in personal injury.
  1. Disconnect the battery ground cable. See BATTERY DISCONNECT .
  2. Remove the engine cover.
  3. Remove the air cleaner outlet pipe. See AIR CLEANER OUTLET PIPE (19.10.31) .
  4. Detach the power steering fluid reservoir and reposition.
    5. Fig 1: Locating Power Steering Fluid Reservoir Attachments
    G00489996Courtesy of JAGUAR CARS, INC.
  5. Disconnect the electrical connector.
    6. Fig 2: Locating Electrical Connector
    G00489997Courtesy of JAGUAR CARS, INC.
  6. Detach the fuel line retaining clip.
    7. Fig 3: Locating Fuel Line Retaining Clip
    G00489998Courtesy of JAGUAR CARS, INC.
  7. Disconnect the fuel rail feed pipe. See Spring Lock Couplings .
    8. NOTE: Make sure the special tool is fully seated to the fuel pipe connections.
  8. Install the special tool.
    9. Fig 4: View Of Special Tool
    G00489999Courtesy of JAGUAR CARS, INC.
    NOTE: Make sure the special tool is fully seated to the fuel pipe connections.
  9. Install the special tool.
    10. Fig 5: Identifying Special Tool
    G00490000Courtesy of JAGUAR CARS, INC.
    NOTE: Make sure the special tool is fully seated to the fuel pipe connections.
  10. Install the special tool.
    11. Fig 6: Locating Special Tool
    G00490001Courtesy of JAGUAR CARS, INC.
  11. Install the air cleaner outlet pipe. See AIR CLEANER OUTLET PIPE (19.10.31) .
    12. NOTE: Vehicles with 4.2L engine shown, other vehicles similar.
  12. Install the fuel pressure gauge.
    13. Fig 7: Locating Fuel Pressure Gauge
    G00490002Courtesy of JAGUAR CARS, INC.
  13. Connect the battery ground cable. See BATTERY CONNECT .
  14. Carry out the fuel system pressure check. See FUEL CHARGING AND CONTROLS - VIN RANGE: G00442->G45703 or FUEL CHARGING AND CONTROLS - VIN RANGE: G45704->G99999 .
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