Jaguar 2000-06

Relieving Fuel System Pressure

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  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Connect the fuel injection pressure test equipment JD 209 to the valve on the fuel supply manifold.
  6.  
  7. Insert the drain/bleed tube into the fuel container.
  8.  
  9. Follow the manufacturer's instructions and depressurize the fuel system.
  10.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Connect the fuel injection pressure test equipment JD 209 to the valve on the fuel supply manifold.
  6.  
  7. Insert the drain/bleed tube into the fuel container.
  8.  
  9. Follow the manufacturer's instructions and depressurize the fuel system.
  10.  

  1. Disconnect the battery ground cable.
  2.  
  3. Remove the fuel system pressure relief valve cap.
    WARNING
    Make sure the tap of the special tool is rotated fully clockwise before installing the special tool 310-012 to the fuel system pressure relief valve. Failure to follow these instructions may result in personal injury.

  4.  
  5. Install the special tool to the fuel system pressure relief valve.
    NOTE
    When relieving the fuel system pressure, catch any displaced fuel in a suitable container.

  6.  
  7. Rotate the tap of the special tool fully counterclockwise.
  8.  
  9. Remove the special tool from the fuel system pressure relief valve.
  10.  
  11. Install the fuel system pressure relief valve cap.
  12.  
  13. Connect the battery ground cable.
  14.  

  1. Disconnect the battery ground cable.
  2.  
  3. Remove the Schrader valve cap.
    WARNING
    Make sure that the tap is turned fully clockwise before fitting the fuel pressure gauge to the Schrader valve. Failure to follow these instructions may result in personal injury.

  4.  
  5. Connect the fuel pressure gauge JD 209 to the Schrader valve.
    NOTE
    When relieving the fuel pressure, catch any displaced fuel in a suitable container.

  6.  
  7. Turn the tap on the fuel pressure gauge fully counterclockwise to relieve the fuel pressure.
  8.  
  9. Remove the fuel pressure gauge and install the Schrader valve cap.
  10.  

  1. Remove the fuel pump fuse.
  2.  
  3. Start the engine and allow to idle until the engine stalls.
  4.  
  5. Crank the engine for approximately five seconds to make sure the fuel injection supply manifold pressure has been released.
  6.  
  7. Install the fuel pump fuse.
  8.  

  1. Make sure the vehicle is in Park for vehicles with automatic transmission, Neutral for vehicles with manual transmission.
  2.  
  3. Apply the parking brake.
  4.  
  5. Place suitable absorbent material around the Schrader valve to absorb any spillage when connecting the gauge set.
  6.  
  7. Remove the protective cap from the Schrader valve.
    NOTE
    Depending on the design of the gauge set, there may be a drain valve and tube. Make sure this valve is closed, and the drain tube placed in a suitable container BEFORE connecting the gauge to the Schrader valve.

  8.  
  9. Connect the gauge, using adaptors if required.
  10.  
  11. Remove the absorbent material and dispose of safely.
  12.  
  13. Disconnect and plug the vacuum hose from the pressure regulator.
  14.  
  15. Start the engine and record the fuel pressure reading. As a guide, the fuel pressure should be approximately 3.0 bar (44.1 psi) with the regulator disconnected.
  16.  
  17. With the engine still running, reconnect the vacuum hose to the pressure regulator and record the reading. The pressure should drop to approximately 2.6 bar (38 psi) when the vacuum hose is reconnected.
  18.  
  19. Switch off the engine.
  20.  
  21. Place more absorbent material around the Schrader valve.
  22.  
  23. Where fitted, open the drain valve and allow the fuel from the gauge and line to flow into the container to depressurize the system.
  24.  
  25. Disconnect and remove the gauge set and any adaptors.
  26.  
  27. Clean up any fuel which may have been spilt and remove the absorbent material. Dispose of safely.
  28.  
  29. Refit and secure the protective cap to the Schrader valve.
  30.  
  31. Reconnect the fuel pressure regulator vacuum hose.
  32.  
  33. Start the engine and make sure there are no leaks.
  34.  

  1. Make sure the vehicle is in Park for vehicles with automatic transmission, Neutral for vehicles with manual transmission.
  2.  
  3. Apply the parking brake.
  4.  
  5. Place suitable absorbent material around the Schrader valve to absorb any spillage when connecting the gauge set.
  6.  
  7. Remove the protective cap from the Schrader valve.
    NOTE
    Depending on the design of the gauge set, there may be a drain valve and tube. Make sure this valve is closed, and the drain tube placed in a suitable container BEFORE connecting the gauge to the Schrader valve.

  8.  
  9. Connect the gauge, using adaptors if required.
  10.  
  11. Remove the absorbent material and dispose of safely.
  12.  
  13. Disconnect and plug the vacuum hose from the pressure regulator.
  14.  
  15. Start the engine and record the fuel pressure reading. As a guide, the fuel pressure should be approximately 3.0 bar (44.1 psi) with the regulator disconnected.
  16.  
  17. With the engine still running, reconnect the vacuum hose to the pressure regulator and record the reading. The pressure should drop to approximately 2.6 bar (38 psi) when the vacuum hose is reconnected.
  18.  
  19. Switch off the engine.
  20.  
  21. Place more absorbent material around the Schrader valve.
  22.  
  23. Where fitted, open the drain valve and allow the fuel from the gauge and line to flow into the container to depressurize the system.
  24.  
  25. Disconnect and remove the gauge set and any adaptors.
  26.  
  27. Clean up any fuel which may have been spilt and remove the absorbent material. Dispose of safely.
  28.  
  29. Refit and secure the protective cap to the Schrader valve.
  30.  
  31. Reconnect the fuel pressure regulator vacuum hose.
  32.  
  33. Start the engine and make sure there are no leaks.
  34.  

  1. Disconnect the battery ground cable.
  2.  
  3. Remove the oil filler cap.
  4.  
  5. Remove the engine cover.
  6.  
  7. Remove the fuel system pressure release valve cap.
    WARNING
    Make sure the tap of the special tool is rotated fully clockwise before installing the special tool to the fuel system pressure release valve. Failure to follow these instructions may result in personal injury.

  8.  
  9. Install the special tool 310-012 to the fuel system pressure relief valve.
    NOTE
    When releasing the fuel system pressure, catch any displaced fuel in a suitable container.

  10.  
  11. Rotate the tap of the special tool fully counterclockwise.
  12.  
  13. Remove the special tool from the fuel system pressure release valve.
  14.  
  15. Install the fuel system pressure relief valve cap.
  16.  
  17. Install the engine cover.
  18.  
  19. Install the oil filler cap.
  20.  
  21. Connect the battery ground cable.
  22.  

 
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