Mazda 2: Cylinder Head Gasket

CYLINDER HEAD GASKET REPLACEMENT

WARNING:

• Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the "Fuel Line Safety Procedure". (See BEFORE SERVICE PRECAUTION).

1. Remove the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION).

2. Set the exhaust manifold out of the way. (See EXHAUST SYSTEM REMOVAL/INSTALLATION).

3. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

4. Disconnect the heater hose and radiator hose.

5. Remove in the order indicated in the table.

6. Install in the reverse order of removal.

7. Inspect the compression. (See COMPRESSION INSPECTION).

1. Camshaft cap
2. Camshaft
3. Cylinder head
4. Cylinder head gasket

Camshaft Cap Removal Note

1. Loosen the camshaft cap installation bolts in two or three steps in the order shown in the figure, and remove them.

Cylinder Head Removal Note

1. Loosen the cylinder head installation bolts in two or three steps in the order shown in the figure, and remove them.

Cylinder Head Installation Note

1. Measure the length of each cylinder head installation bolt.

• If it exceeds the maximum specification, replace the cylinder head installation bolt.

Cylinder head bolt length

• Standard: 128.9-129.5 mm {5.075-5.098 in}
• Maximum: 130.2 mm {5.125 in}

2. Tighten the cylinder head installation bolts in three steps in the order shown in the figure.

• Tightening torque: 18-22 N*m {1.8-2.2 kgf*m, 13-16 ft*lbf}
• Tightening angle: 85

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