Mazda 3 manuals

Mazda 3 Service Manual: Positive Crankcase Ventilation (PCV) Valve Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Emissions / Positive Crankcase Ventilation (PCV) Valve Inspection [Mzr 2.0, Mzr 2.5]

Airflow Inspection

1. Disconnect the section (A) of the ventilation hose shown in the figure.


2. Start the engine and verify that vacuum is applied to the end of the disconnected ventilation hose while the engine is idling.

NOTE:

3. If it can be verified that vacuum occurs in the ventilation hose, the positive crankcase ventilation (PCV valve) system is determined to be normal.

4. Remove the battery cover..

5. Disconnect the negative battery cable..

6. Remove the intake manifold and the fuel distributor component as a single unit..

7. Remove the PCV valve and the oil separator as a single unit..

8. Verify that there is no airflow when pressure is applied to port A.


9. Verify that there is airflow when vacuum is applied to port A.

EGR Valve Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Drain the engine coolant from the radiator.. 4. Remove the air cleaner and the air hose as a single unit.. 5. Remove ...

Positive Crankcase Ventilation (PCV) Valve Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove the intake manifold and the fuel distributor component as a single unit.. 4. Remove in the order indicated in ...

Other materials:

Rear Bumper Removal/Installation
4SD 1. Disconnect the negative battery cable.. 2. Remove the rear combination light.. 3. Remove the fastener A and screw B. 4. Remove the rear splash shield.. 5. Remove the screws C. 6. Remove the bolts D. 7. Affix the protective tape to the position shown in the figure. ...

Oil Seal (Control Valve Body) Replacement [Fw6 A EL]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove the air cleaner component.. 4. Disconnect the control valve body connector. 5. Remove the hose clamp. 6. Cut the oil seal using a utility knife as shown in the following illustration. CAUTION: ...

Lights-On Reminder
The lights-on reminder is operable when the time setting *1 of the auto headlight off function is off. If lights are on and the ignition is switched to ACC or the ignition is switched off, a continuous beep sound will be heard when the driver's door is opened. *1 If the light switch is le ...

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