Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) Valve Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the intake manifold..
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
|
1 |
PCV hose |
|
2 |
Oil separator |
|
3 |
Retainer (See Retainer Removal Note.) (See Retainer Installation Note.) |
|
4 |
PCV valve |
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 shop rag 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
Airflow Inspection
1. Disconnect the section (A) of ventilation hose shown in the figure.
2. Start the engine and verify that vacuum is applied to the end of the disconnected
ventilation hose ...
Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
The PCV valve is open/closed by the intake manifold vacuum.
Construction
The PCV valve ...
Other materials:
Side Air Bag Sensor Removal/Installation [Two Step Deployment Control System]
WARNING:
Handling the side air bag sensor improperly can accidentally operate (deploy)
the air bag module, which may seriously injure you. Read the air bag system
service warnings and cautions before handling the side air bag sensor..
1. Switch the ignition to off.
2. Disconnec ...
Air Fuel Ratio (A/F) Sensor
Purpose/Function
Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust
gas as basic information for mainly determining the fuel injection amount.
Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust
gas and inputs it to the PCM as an ox ...
Front Wiring Harness Protector Removal/Installation
Front Wiring Harness Protector No.1
1. Disconnect the negative battery cable..
2. Remove the air cleaner case..
3. While pressing the tabs of clip A in the direction of the arrows (1) shown
in the figure, pull clip A in the direction of the arrow (2) shown in the figure
to detach the tab of ...
