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Valve Cover - (RH) Removal/Installation - 3.0L: Notes

WARNING: This page is about a different car, the 2005 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable.
  2. Disconnect the ignition coil electrical connector.
    Fig 1: Disconnecting Ignition Coil Electrical Connector
    G03728391Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Do not pull on the spark plug wire as it may separate from the spark plug wire connector inside the spark plug boot.
  3. Disconnect the spark plug wires by twisting while pulling upward.
    Fig 2: Disconnecting Spark Plug Wires
    G03728392Courtesy of MAZDA MOTORS CORP.
  4. Disconnect the heater hose support from the stud.
    Fig 3: Disconnecting Heater Hose Support From Stud
    G03728393Courtesy of MAZDA MOTORS CORP.
  5. Disconnect the spark plug wire holders.
    Fig 4: Disconnecting Spark Plug Wire Holders
    G03728394Courtesy of MAZDA MOTORS CORP.
  6. Disconnect the engine control sensor wiring from the intake air temperature (IAT) sensor. See FUEL CHARGING WIRING HARNESS REMOVAL/INSTALLATION - 3.0L .
  7. Disconnect the engine control sensor wiring from the mass air flow (MAF) sensor. Position the engine control sensor wiring aside.
    Fig 5: Disconnecting Engine Control Sensor Wiring
    G03728395Courtesy of MAZDA MOTORS CORP.
  8. Disconnect the vacuum hose.
    Fig 6: Disconnecting Vacuum Hose
    G03728396Courtesy of MAZDA MOTORS CORP.
  9. Disconnect the engine control wire harness from the valve cover studs.
    Fig 7: Disconnecting Engine Control Wire Harness From Valve Cover Studs
    G03728397Courtesy of MAZDA MOTORS CORP.
  10. Disconnect the crankcase ventilation tube.
    Fig 8: Disconnecting Crankcase Ventilation Tube
    G03728398Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • To prevent stretching the valve cover gasket, loosen silicone gasket and sealant from the cylinder head by sliding a flat knife between the valve cover gasket and cylinder head.
  11. Remove the eight bolts and remove the valve cover.
    Fig 9: Removing Valve Cover
    G03728399Courtesy of MAZDA MOTORS CORP.
  12. Remove the valve cover gasket, if required.
    Fig 10: Removing Valve Cover Gasket
    G03728400Courtesy of MAZDA MOTORS CORP.
  13. Install in the reverse order of removal.
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