Cylinder Head Cover Installation Note

WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

To assure the sealing performance of the cylinder head cover, be careful of the following:
- Verify that the cylinder head cover gasket is inserted into the cylinder head cover groove and install the cylinder head cover.
- Completely clean and remove oil, dirt, silicone sealant or other foreign matter from the seal surface.
To prevent silicone sealant from hardening, adhere the cylinder head cover and the cylinder head firmly within 10 min. after applying silicone sealant. After adhering them, tighten the installation bolts immediately.

Insert a new cylinder head cover gasket into the cylinder head cover groove.
Apply silicone sealant (TB1217D or equivalent) to the areas shown in the figure.

Fig 1: Silicone Sealant (TB1217D Or Equivalent) Application Area
Courtesy of MAZDA MOTORS CORP.
Tighten the cylinder head cover bolts in the order shown in the following 3 steps.

Fig 2: Cylinder Head Cover Bolts Tightening Sequence
Courtesy of MAZDA MOTORS CORP.

Tightening torque
- Step 1: 6-10 N.m {62-101 kgf.cm, 54-88 in.lbf}
- Step 2: 6-10 N.m {62-101 kgf.cm, 54-88 in.lbf}
- Step 3: 6-10 N.m {62-101 kgf.cm, 54-88 in.lbf}
Measure the tightening torque again and verify that it is 6 N.m {62 kgf.cm, 54 in.lbf} or more.
Install in the reverse order of removal.