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310-01A Fuel Tank and Lines > < Fuel Line Evacuation Using Recovery Equipment

Focus 1999 (08.1998-12.2004)

Fuel System - General Information - Liquified Petroleum Gas (LPG) - Fuel System Differential Pressure Check Focus 1999 (08/1998-12/2004)
General Procedures

Special Tool(s)

T-Connector, Evaporator Adjustment

310-126
General Equipment
Differential pressure meter
  1. WARNING:
    WARNING:Do not modify the system configuration or components, or install components not specially designed for use with alternative fuels. Ford Motor Company Ltd has specially designed the materials, components and system configuration for alternative fuel vehicles, and each particular system is precisely calibrated for efficient operation. The use of incorrect parts or materials can produce an untested configuration that could result in fire, or cause engine damage. Failure to follow these instructions may result in personal injury.
    WARNING:
    WARNING:Eye, hand and ear protection are required to be worn during evacuation or removal and installation of fuel system components. Failure to follow this instruction may result in personal injury.
    CAUTION:
    CAUTION:If the alternative fuel system is being disconnected for an extended length of time, cover all open hose fittings and electrical connections to avoid contamination.
    Remove the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).

  1. Remove the fuel vaporizer blanking plug and O-ring seal.

  1. Install the differential pressure meter connector to the fuel vaporizer.

  1. Connect the differential pressure meter hose to the differential pressure meter connector on the fuel vaporizer.
  1. Connect the differential pressure meter hose to the differential pressure meter.

  1. Disconnect the manifold absolute pressure (MAP) sensor vacuum hose from the MAP sensor.

  1. Connect the differential pressure meter T-piece connector to the MAP sensor vacuum hose.

  1. Connect the differential pressure meter hose to the differential pressure meter T-piece connector.

  1. Connect the differential pressure meter hose between the T-piece connector and the MAP sensor.
  1. Install the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).
  1. Start the engine and allow it to idle until it reaches normal operating temperature and the fuel system has been switched to LPG.

  1. NOTE:
    NOTE:If the display on the differential pressure meter is negative the differential pressure meter hoses are connected incorrectly.
    NOTE:
    NOTE:Turn the fuel vaporizer adjusting screw clockwise to increase or counterclockwise to decrease the differential pressure setting.
    Using the pressure adjusting screw on the right-hand side of the fuel vaporizer, set the pressure setting on the differential pressure meter to 1400 +/- 50 millibar.
  1. Raise the engine speed to 2,000 rpm for 5 seconds and then allow it to return to idle before checking the pressure settings. If the pressure settings are incorrect, repeat step 12.
  1. Turn the ignition to position 0.
  1. NOTE:
    NOTE:Leave the differential pressure testing equipment connected.
    Evacuate the fuel lines.
    For additional information, refer to: Fuel Line Evacuation Without Using Recovery Equipment (310-00C Fuel System - General Information - Liquified Petroleum Gas (LPG), General Procedures).
  1. Remove the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).

  1. Disconnect the differential pressure meter hose from the differential pressure meter connector on the fuel vaporizer.

  1. Remove the differential pressure meter connector from the fuel vaporizer.

  1. Install the fuel vaporizer blanking plug and O-ring seal.

  1. Disconnect the fuel injection supply manifold fuel supply line from the fuel filter.
    • Discard the fuel line retaining clip.

  1. Install the special tool between the fuel injection supply manifold fuel supply line and the fuel filter.

  1. Connect the differential pressure meter to the differential pressure meter hose on the special tool.
  1. Install the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).
  1. Start the engine and allow it to idle until it reaches normal operating temperature and the fuel system has been switched to LPG.

  1. NOTE:
    NOTE:If the display on the differential pressure meter is negative the differential pressure meter hoses are fitted incorrectly.
    NOTE:
    NOTE:Turn the fuel vaporizer adjusting screw clockwise to increase or counterclockwise to decrease the differential pressure setting.
    Using the pressure adjusting screw on the left-hand side of the fuel vaporizer, set the pressure settings on the differential pressure meter to 1000 +/- 10 millibar.
  1. Raise the engine speed to 2,000 rpm for 5 seconds and then allow it to return to idle before checking the pressure settings. If the pressure settings are incorrect, repeat step 25.
  1. Turn the ignition to position 0.
  1. NOTE:
    NOTE:Leave the differential pressure testing equipment connected.
    Evacuate the fuel lines.
    For additional information, refer to: Fuel Line Evacuation Without Using Recovery Equipment (310-00C Fuel System - General Information - Liquified Petroleum Gas (LPG), General Procedures).

  1. Disconnect the differential pressure meter from the differential pressure meter hose on the special tool.

  1. Remove the special tool from the fuel injection supply manifold fuel supply line and the fuel filter.

  1. NOTE:
    NOTE:Install a new fuel line retaining clip.
    Connect the fuel injection supply manifold fuel supply line to the fuel filter.
  1. Remove the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).

  1. Disconnect the differential pressure meter hose from the differential pressure meter T-piece connector and the MAP sensor.

  1. Disconnect the differential pressure meter hose from the differential pressure meter T-piece connector.

  1. Disconnect the differential pressure meter T-piece connector from the MAP sensor vacuum hose.

  1. Connect the MAP sensor vacuum hose to the MAP sensor.
  1. Install the air cleaner.
    For additional information, refer to: Air Cleaner (303-12 Intake Air Distribution and Filtering, Removal and Installation).
  1. WARNING:
    WARNING:Before the system is tested for normal operation, carry out the fuel system leak test. Failure to follow this instruction may result in personal injury.
    Check the fuel system for leaks.
    For additional information, refer to: Fuel System Leak Test (310-00C Fuel System - General Information - Liquified Petroleum Gas (LPG), General Procedures).

310-01A Fuel Tank and Lines > < Fuel Line Evacuation Using Recovery Equipment