Tuesday, November 8, 2011

How to replace Valve Covers on 2003 Ford Focus?

Valve Covers

Removal & Installation

2.3L (VIN Z) Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
  3. Remove or disconnect the following:

    Camshaft position (CMP) sensor electrical connector
    Cylinder head temperature (CHT) sensor boot
    CHT sensor electrical connector
    Coil-on-plug electrical connectors
    Ignition coils
    Breather tube from the valve cover
    Wiring harness retainers from the valve cover studs and position aside.
    Fuel injection supply manifold wiring harness from the valve cover.
    Fuel injector electrical connectors
    Fuel pressure regulator electrical connector and the vacuum hose.
    Upper HO2S electrical connector
    Two wire connectors from the bracket
    Bracket bolt and position it aside.
    Valve cover

    Click image to see an enlarged view
    Fig. Cylinder head cover bolt tightening sequence-2.3L (VIN Z) engine.
To install:

Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths.

  1. Clean and inspect the sealing surfaces.
  2. Inspect the valve cover gaskets for damage. Install new gaskets if necessary.
  3. Install the valve cover and bolts and tighten to 89 inch lbs. (10 Nm) in the sequence shown.
  4. Reposition the fuel injection supply wiring harness.
  5. Install the bracket and bolt.
  6. Install the two wire connectors on the bracket.
  7. Connect the upper HO2S electrical connector.
  8. Connect the fuel injector electrical connectors.
  9. Connect the fuel pressure regulator electrical connector and the vacuum hose.
  10. Install the wiring harness retainers on the valve cover studs.
  11. Install the breather tube on the valve cover.
  12. Install the coil-on-plug assemblies.
    Push the coil assemblies down firmly until the boot seal has sealed the access hole.
  13. Install the coil assemblies.
  14. Install the coil assembly bolts.
  15. Connect the ignition coil electrical connectors.
  16. Connect the cylinder head temperature (CHT) sensor electrical connector.
  17. Position the CHT boot.
  18. Connect the camshaft position (CMP) sensor electrical connector.
  19. Connect the battery ground cable.

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.


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How to test cars starter?

How to replace starter in car?


car will turn over but will not start?


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