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HOMESERVICE MANUALSMAZDA20083 S TOURING, 4D HATCHBACK, 2.3 4, STANDARDREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALENGINE MECHANICAL - OVERHAUL - (LF, L3)TIMING CHAIN ASSEMBLYCYLINDER HEAD COVER ASSEMBLY NOTE
2008 Mazda 3 s Touring, 4D Hatchback, 2.3 4, Standard

Cylinder Head Cover Assembly Note

2008 Mazda 3 s Touring, 4D Hatchback, 2.3 4, StandardSECTION Cylinder Head Cover Assembly Note
  1. Apply silicone sealant to the mating faces as shown in the figure.
    CAUTION:
    • Install the cylinder head cover within 10 min. of applying the silicone sealant.

    Dot Diameter 

    1. 4.0-6.0 mm {0.16-0.23 in} 
      2. Fig 1: Applying Silicone Sealant
      G02831674Courtesy of MAZDA MOTORS CORP.

  2. Install the cylinder head cover with a new gasket.
  3. Tighten the bolts in the order shown in the figure.

    Tightening Torque 

    1. 8.0-10.5 N.m {81.6-107.1 kgf.cm, 70.9-92.9 in.lbf} 
      2. Fig 2: Cylinder Head Cover Bolt Tightening Sequence
      G02831675Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.