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:

How to use USB mode (Type B)
Type Playable data USB mode MP3/WMA/AAC/OGG file This unit does not support a USB 3.0 device. In addition, other devices may not be supported depending on the model or OS version. USB devices formatted to FAT32 are supported (USB devices formatted to other ...

Rear Door Speaker Removal/Installation
1. Disconnect the negative battery cable.. 2. Remove the rear door trim.. 3. Disconnect the connector. Without Bose® With Bose® 4. Remove the screw. 5. Remove the rear door speaker in the direction of the arrow shown in the figure. Without Bose® With Bose® 6. Install i ...

Radiator Drain Plug Replacement [Mzr 2.0, Mzr 2.5]
WARNING: Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system. Tu ...

© 2016-2025 Copyright www.mazda3tech.com