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In-vehicle Repair > < Diagnosis and Testing|Engine

C-MAX 2003.75 (06.2003-)

Engine - 1.8L Duratec-HE (MI4)/2.0L Duratec-HE (MI4) - Valve Clearance Adjustment C-MAX 2003.75 (06/2003-)
General Procedures

Special Tool(s)

Socket, Spark Plug

303-499
General Equipment
Feeler gauges
Materials
Name
Specification
Silicone Sealant
WSE-M4G323-A4
  1. Remove the cowl panel grille. For additional information, refer to Section  501-02 Front End Body Panels.

  1. Remove the oil filler pipe.
    • Release the securing clip and rotate the oil filler pipe counterclockwise.

  1. Remove the engine cover.
  1. Disconnect the battery ground cable. For additional information, refer to Section  414-01 Battery, Mounting and Cables.

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

  1. Disconnect the positive crankcase ventilation (PCV) hose from the valve cover.

  1. Remove the ignition coil-on-plug.

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

  1. Detach the engine wiring harness from the valve cover.

  1. Remove the engine cover retaining brackets.

  1. Remove the valve cover.
  1. NOTE:
    NOTE: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:Note down each cylinder number and the valve clearances measured.
    Using a suitable set of feeler gauges, measure the valve clearances.
  1. NOTE:
    NOTE: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 Specification - in this section.
    Remove the camshafts.
    For additional information, refer to Camshafts - in this section.
  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. Calculate the valve tappet thickness required (thickness of currently installed valve tappet, + the measured valve clearance, - the required valve clearance).
      For additional information, refer to Specification - in this section.
    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 - in this section.
  1. NOTE:
    NOTE: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. Install the engine cover retaining brackets.

  1. Attach the engine wiring harness to the valve cover.

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

  1. Install the ignition coil-on-plug.

  1. Connect the positive crankcase ventilation (PCV) hose to the valve cover.

  1. Connect the camshaft position (CMP) sensor electrical connector.
  1. Connect the battery ground cable. For additional information, refer to Section  414-01 Battery, Mounting and Cables.

  1. Install the engine cover.

  1. Install the oil filler pipe.
    • Rotate the oil filler pipe approximately 90 degrees clockwise until the securing clip snaps into position.
  1. Install the cowl panel grille. For additional information, refer to Section  501-02 Front End Body Panels.

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