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

WARNING: This page is about a different car, the 2007 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the battery. See BATTERY DISCONNECT .
Disconnect the ignition coil electrical connector.

Fig 1: Locating Ignition Coil Electrical Connector
Courtesy 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.
Disconnect the spark plug wires from the ignition coil by twisting while pulling upward.

Fig 2: Locating Spark Plug Wires
Courtesy of MAZDA MOTORS CORP.
Disconnect the heater hose support from the stud.

Fig 3: Locating Heater Hose Support
Courtesy of MAZDA MOTORS CORP.
Disconnect the spark plug wire holders.

Fig 4: Locating Spark Plug Wire Holders
Courtesy of MAZDA MOTORS CORP.
Disconnect the vacuum hose.
Disconnect the engine control wire harness from the valve cover studs.
Disconnect the crankcase ventilation tube.

Fig 5: Locating Crankcase Ventilation Tube
Courtesy 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.
Remove the eight bolts and remove the valve cover.

Fig 6: Locating Valve Cover
Courtesy of MAZDA MOTORS CORP.
Remove and discard the valve cover gasket, if required.

Fig 7: Locating Valve Cover Gasket
Courtesy of MAZDA MOTORS CORP.
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 mane leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
- To clean the sealing area, use silicone gasket remover and metal surface prep. Observe all warnings and cautions and follow all application directions contained on the packaging for the silicone gasket remover and metal surface prep.
Clean the RH valve cover gasket mating surfaces.