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Mazda CX-5 Service & Repair Manual: Compression Inspection

Mazda CX-5 Service & Repair Manual / Engine / General / Compression Inspection

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 it is less than the minimum specification, or there is a cylinder with a maximum value that exceeds the other cylinders, add a small quantity of engine oil through the spark plug hole and perform Steps (1) to (3).

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
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
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:

A/C Unit Disassembly/Assembly
1. Disassemble in the order indicated in the table. CAUTION: If a non-specified grease is used, it may result in abnormal noise or improper operation of the links. Apply only the specified grease to each link. 2. Assemble in the reverse order of disassembly. ...

Air Fuel Ratio (A/F) Sensor Heater Control
Outline Based on the control of the A/F sensor heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance. ...

Headlight High Beam Indicator Light
Purpose Notifies the user that the headlights (HI) are illuminated. Function Illuminates when the headlight (HI) or parking illumination conditions are met. Construction Displayed in the instrument cluster. Operation 1. When the light switch is operat ...

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