Valve Cover: Service and Repair
Valve Cover
Material
Removal
All vehicles
1. Disconnect the battery ground cable.
2. Disconnect the Camshaft Position (CMP) sensor electrical connector.
3. Lift up the connector boot and disconnect the Cylinder Head Temperature (CHT) sensor electrical connector.
4. Disconnect the coil-on-plug electrical connectors.
5. Remove the ignition coils.
1 Remove the ignition coil bolts.
2 While rotating, pull the ignition coils straight up.
6. Disconnect the breather tube from the valve cover.
7. Disconnect the fuel rail pressure and temperature sensor and the fuel injector electrical connectors. Detach the wiring harness retainers.
8. Remove the radio interference capacitor bracket bolt and position the bracket aside.
Vehicles with secondary air injection (AIR)
9. Disconnect the Heated Oxygen Sensor (HO2S) electrical connector.
All vehicles
10. Disconnect the wiring harness retainer from the valve cover studs and position aside.
11. Remove the bolts and the valve cover.
12. CAUTION: 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.
Clean and inspect the sealing surfaces.
Installation
All vehicles
1. Inspect the valve cover gaskets for damage. Install new gaskets if necessary.
2. Install the valve cover and bolts. Tighten the bolts in the sequence shown.
3. Install the wiring harness retainer on the valve cover studs.
Vehicles with secondary air injection (AIR)
4. Connect the HO2S electrical connector.
All vehicles
5. Position the radio interference capacitor bracket and install the bolt.
6. Attach the wiring harness retainers. Connect the fuel rail pressure and temperature sensor and the fuel injectors electrical connectors.
7. Install the breather tube on the valve cover.
8. Install the coil-on-plug assemblies.
1 NOTE: Push the coil assemblies down firmly until the boot seal has sealed the access hole. Install the coil assemblies.
2 Install the coil assembly bolts.
9. Connect the ignition coil electrical connectors.
10. Connect the CHT sensor electrical connector and install the connector boot.
11. Connect the CMP sensor electrical connector.
12. Connect the battery ground cable