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In-vehicle Repair > < Diagnosis and Testing|Engine

Fiesta 2002.25 (11.2001-)

Engine - 2.0L Duratec-HE (MI4) - Valve Clearance Adjustment Fiesta 2002.25 (11/2001-)
General Procedures

Special Tool(s)

Socket, Spark Plug

303-499 (21-202)

Pliers, Valve Stem Seal

303-508 (21-211)
General Equipment
Feeler gauges
Materials
Name
Specification
Silicone Sealant
WSE-M4G323-A4 
  1. Disconnect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  1. Remove the air cleaner.
    For additional information, refer to: Air Cleaner - 2.0L Duratec-HE (MI4) (303-12 Intake Air Distribution and Filtering, Removal and Installation).

  1. Detach the engine wiring harness from the valve cover.
    1. Unclip the power steering return line from the engine wiring harness bracket.
    1. Remove the air cleaner retaining bracket.
    1. Unclip the engine wiring harness bracket from the intake manifold.
    1. Unclip the engine wiring harness from the intake manifold.

  1. Remove the positive crankshaft ventilation (PCV) hose.

  1. Disconnect the camshaft position (CMP) sensor electrical connector.

  1. Remove the air cleaner retaining bracket.

  1. Remove the evaporative emission (EVAP) valve support bracket.

  1. Using the special tool, disconnect the spark plug electrical connectors.

  1. Using the special tool, remove the spark plugs.

  1. Remove the valve cover.
  1. CAUTION:
    CAUTION:Only rotate the crankshaft in the normal direction of rotation.
    Rotate the crankshaft until piston No. 1 is at top dead center (TDC).

  1. NOTE:
    NOTE:Make a note of each cylinder number and the valve clearances measured.
    Using a suitable set of feeler gauges, measure the valve clearances.
  1. CAUTION:
    CAUTION:Only rotate the crankshaft in the normal direction of rotation.
    Rotate the crankshaft until each piston is at TDC and measure the valve clearances.
  1. NOTE:
    NOTE:Only carry out the following steps when the valve clearance(s) require adjustment.
    For additional information, refer to: Specifications (303-01D Engine - 2.0L Duratec-HE (MI4), Specifications).
    Remove the camshafts.
    For additional information, refer to: Camshafts (303-01D Engine - 2.0L Duratec-HE (MI4), In-vehicle Repair).
  1. NOTE:
    NOTE:The number on the valve tappet is the valve tappet thickness, however only the decimal places are marked (for example .650 = 3.650).
    Determine the valve tappet thickness required:
    1. Remove the valve tappet and read the thickness from the underside.
    1. Valve tappet thickness required = thickness of currently installed valve tappet + the measured valve clearance - the required valve clearance.
      For additional information, refer to: Specifications (303-01D Engine - 2.0L Duratec-HE (MI4), Specifications).
    1. Install the correct valve tappet.
  1. NOTE:
    NOTE:Do not install the valve cover at this stage.
    Install the camshafts.
    For additional information, refer to: Camshafts (303-01D Engine - 2.0L Duratec-HE (MI4), In-vehicle Repair).
  1. CAUTION:
    CAUTION:Only rotate the crankshaft in the normal direction of rotation.
    Rotate the crankshaft until each piston is at TDC and measure the valve clearances.
  1. Repeat this procedure as necessary until all valve clearances are within the specified tolerance.

  1. Apply a small bead of sealant to the areas as shown.

  1. NOTE:
    NOTE:Install a new valve cover gasket if necessary.
    Install the valve cover.
    • Tighten the bolts in the sequence shown.

  1. Using the special tool, install the spark plugs.

  1. Using the special tool, connect the spark plug electrical connectors.

  1. Install the evaporative emission (EVAP) valve support bracket.

  1. Install the air cleaner retaining bracket.

  1. Connect the CMP sensor electrical connector.

  1. Install the positive crankshaft ventilation (PCV) hose.

  1. Attach the engine wiring harness to the valve cover.
    1. Clip the engine wiring harness to the intake manifold.
    1. Clip the engine wiring harness bracket to the intake manifold.
    1. Install the air cleaner retaining bracket.
    1. Clip the power steering return line to the engine wiring harness bracket.
  1. Install the air cleaner.
    For additional information, refer to: Air Cleaner - 2.0L Duratec-HE (MI4) (303-12 Intake Air Distribution and Filtering, Removal and Installation).
  1. Connect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).

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