Mazda 3 manuals

Mazda 3 Service Manual: Compression Inspection [Skyactiv G 2.0]

Mazda 3 Service Manual / Engine / General / Compression Inspection [Skyactiv G 2.0]

WARNING:

1. Verify that the battery is fully charged..

2. Warm up the engine to the normal operating temperature.

3. Perform “Fuel Line Safety Procedures”..

4. Remove the following parts.

a. Plug hole plate..

b. Ignition coil/ion sensors..

c. Spark plugs..

d. Fuel pump relay

e. Fuel injector relay

5. Measure the compression pressure using the following procedure.

a. Press a compression gauge into the spark plug hole.


b. Fully depress the accelerator pedal.

c. Crank the engine and measure the compression pressure.

NOTE:

d. Perform Steps (1) to (3) for all cylinders.

e. If the measured value is less than the minimum value, or there is a cylinder whose compression value varies from that of other cylinders by 140 kPa {1.43 kgf/cm2, 20.3 psi}

or more, add a small amount of engine oil through the spark plug hole. Then measure the compression pressure and perform the respective operations for the following cases.

f. If the measured value is high, it is possible that there is an error in the electric variable valve timing system.

6. Remove the compression gauge.

7. Install the following parts.

a. Fuel injector relay

b. Fuel pump relay

c. Spark plugs..

d. Ignition coil/ion sensors..

e. Plug hole plate..

Compression Inspection [Mzr 2.3 Disi Turbo]
WARNING: Hot engines and oil can cause severe burns. Be careful not to burn yourself during removal/installation of each component. Fuel vapor is hazardous. It can very easily ignit ...

Electric Variable Valve Timing Actuator Inspection [Skyactiv G 2.0]
WARNING: A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing. CAUTION: Do not disassemble the electric variable valve timing ac ...

Other materials:

Variable Valve Timing Actuator Removal/Installation [Mzr 2.0, Mzr 2.5]
NOTE: Variable valve timing actuator can not be disassembled because it is a precision unit. Intake camshaft sprocket is integrated with the variable valve timing actuator and cannot be disassembled. 1. Remove the battery cover.. 2. Disconnect the negative battery cable ...

General Procedures (Steering)
Wheel and Tire Installation 1. When installing the wheels and tires, tighten the wheel nuts in a criss-cross pattern to the following tightening torque. Tightening torque 88—118 N·m {9.0—12 kgf·m, 65—87 ft·lbf} Connector Disconnection 1. Disconnect the negative battery cable ...

Oil Seal Replacement [FS5 A EL]
1. Remove the aerodynamic under cover No. 2.. 2. Remove the oil seal. a. Drain the ATF.. b. Remove the drive shaft and/or joint shaft.. CAUTION: The oil seal is easily damaged by the sharp edges of the drive shaft splines. Do not let the splines contact the oil seal. c. Remo ...

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