Mazda 3 Service Manual: 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 the table.
|
1 |
Oil separator |
|
2 |
Retainer (See Retainer Removal Note.) (See Retainer Installation Note.) |
|
3 |
PCV valve |
5. Install in the reverse order of removal.
Retainer Removal Note
CAUTION:
-
Be sure to follow the removal procedures below to prevent the leakage of blow-by gas caused by the damage to the tab of the oil separator or the oil separator itself.
1. Insert a flat blade screwdriver with its tip wrapped in a cloth into the gap between the retainer and the oil separator as shown in the figure.
2. Spread the side surface of the retainer outward to dismount it with attention to the tab.
Retainer Installation Note
CAUTION:
-
Be sure to replace the old retainer with a new one to prevent the escape of blow-by gas. Reinstalling the old retainer will reduce airtightness.
1. Make sure that the retainer alignment mark is directed as shown in the left diagram before installing the retainer to the oil separator.
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 ...
Purge Solenoid Valve Inspection [Mzr 2.0, Mzr 2.5]
Airflow Inspection
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the purge solenoid valve..
4. Inspect airflow between the ports under the following conditi ...
Other materials:
Camshaft Position (CMP) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
CAUTION:
When replacing the CMP sensor, make sure there is no foreign material on
it such as metal shavings. If it is installed with foreign material, the sensor
output signal will malfunction resulting from fluctuation in magnetic flux and
cause a deterioration in engine control.
...
Theft Deterrent System Clearing Freeze Frame Data
1. Connect the M-MDS (IDS) to the DLC–2.
2. After the vehicle is identified, select the following items from the initialization
screen of the IDS.
Select “Body”.
Select "Burglar Service Functions".
3. Then, select the following item from the screen menu.
...
Control System Personalization Features Setting Procedure
1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initial
screen of the M-MDS.
When using the IDS (laptop PC)
Select the “Module Programming”.
Select the “Programmable Parameters”.
3. Select ...
