Mazda 3 manuals

Mazda 3 Service Manual: Compression Inspection [Mzr 2.3 Disi Turbo]

Mazda 3 Service Manual / Engine / General / Compression Inspection [Mzr 2.3 Disi Turbo]

WARNING:

1. Verify that the battery is fully charged..

2. Warm up the engine to normal operating temperature.

3. Remove the charge air cooler..

4. Remove the ignition coils..

5. Remove all the spark plugs..

6. Remove the fuel pump relay..

7. Remove the fuel injector relay.

8. Measure the compression pressure using the following procedure.

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


b. Fully depress the accelerator pedal and crank the engine.

c. Note down the maximum gauge reading.

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 196.1 kPa {2.000 kgf/cm2, 28.44 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.

9. Install the fuel injector relay.

10. Install the fuel pump relay..

11. Install the spark plugs..

12. Install the ignition coils..

13. Install the charge air cooler..

Compression Inspection [Mzr 2.0, Mzr 2.5]
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 ...

Compression Inspection [Skyactiv G 2.0]
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 ...

Other materials:

Engine Coolant Temperature (ECT) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
WARNING: When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor. ECT Sensor No.1 1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Drain the engine coolant.. 4. Remove the battery and b ...

Decoration Panel Removal/Installation
1. Remove the following parts: a. Passenger-side front scuff plate. b. Passenger-side front side trim. c. Glove compartment. d. Passenger-side lower panel. 2. Remove the screw. 3. Pull the decoration panel in the direction of the arrow (1), (2) shown in the figure, while remove the hoo ...

Afs (Adaptive Front Lighting System) Off Switch Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the switch panel in the direction of the arrow shown in the figure. 3. Disconnect the connector. 4. Remove the AFS OFF switch in the direction of the arrow (2) shown in the figure while pressing the tabs in the direction of the arrow ...

© 2016-2019 Copyright www.mazda3tech.com