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
   
   

   

   

   Fig. Cylinder head cover bolt tightening sequence-2.3L (VIN Z) engine.

To install:

WARNING

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.
    
    NOTE

    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.

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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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The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

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Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

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Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

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How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

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How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

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How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

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car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

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Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

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