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:
Variable Intake Air 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 variable intake air solenoid valve..
4. Inspect airflow between the ports under the following conditions.
If not as specified, replace the variable intake air solenoid val ...
Intake Manifold Vacuum Inspection [Mzr 2.0, Mzr 2.5]
1. Disconnect the evaporative hose (purge solenoid valve side) and install the
vacuum gauge..
2. Verify that the intake air hoses are installed securely.
3. Warm up the engine.
4. Measure the intake manifold vacuum while idling (no load) using the vacuum
gauge.
If not within the sp ...
Glass Panel Removal/Installation
1. Fully close the glass panel.
2. Fully open the sunshade.
3. Remove the screws, and then remove the glass panel.
4. Peel the weatherstrip off the glass panel.
5. Install in the reverse order of removal.
6. Adjust the glass panel.. ...
