Mazda 2: Valve Clearance

VALVE CLEARANCE INSPECTION

1. Disconnect the negative battery cable.

2. Remove the splash shield (RH). (See DRIVE BELT REMOVAL/INSTALLATION).

3. Remove the fresh-air duct and the air cleaner as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

4. Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION).

5. Disconnect the ventilation hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION).

6. Set the vacuum hose out of the way.

7. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION).

8. Measure the valve clearance.

NOTE:

• Make sure to note down the measured values for choosing the suitable replacement tappets.

1. Rotate the crankshaft clockwise so that the No.1 cylinder is at TDC of the compression stroke.
2. Measure the valve clearance at A in the figure.

• If not within the specification, replace the tappet and adjust the valve clearance to the median value. (See VALVE CLEARANCE ADJUSTMENT).

Valve clearance [Engine cold]

• IN: 0.27-0.33 mm {0.0107-0.0129 in}
• EX: 0.27-0.33 mm {0.0107-0.0129 in}

3. Rotate the crankshaft clockwise 360

   READ NEXT:

    Variable Valve Timing Actuator

   VARIABLE VALVE TIMING ACTUATOR INSPECTION CAUTION: The variable valve timing actuator cannot be disassembled since it is a precision unit. 1. Disconnect the negative battery cable. 2. Remove the

    Oil Control Valve (OCV)

   OIL CONTROL VALVE (OCV) INSPECTION Coil Resistance Inspection 1. Disconnect the negative battery cable. 2. Disconnect the OCV connector. 3. Measure the coil resistance between terminals A and B usin

    Timing Chain

   TIMING CHAIN REMOVAL/INSTALLATION WARNING: Do not remove the jack from the engine with the bolt of engine mount No. 3 removed because the engine may fall off and cause a serious accident. 1. Dis

   SEE MORE:

    Brake System

   Foot Brake This vehicle has power-assisted brakes that adjust automatically through normal use. Should power-assist fail, you can stop by applying greater force than normal to the brake pedal. But the distance required to stop will be greater than usual. WARNING Do not coast with the engi

    Keys

   WARNING Do not leave the key in your vehicle with children and keep them in a place where your children will not fi nd or play with them: Leaving children in a vehicle with the key is dangerous. This could result in someone being badly injured or even killed. Children may fi nd these keys t