Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) System
Purpose, Outline
-
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
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The intake manifold vacuum introduces blow-by gas to the intake manifold via the PCV valve and the ventilation hose.
System Diagram
Structure
-
The positive crankcase ventilation system consists of the following parts:
|
Part name |
Reference |
|
PCV valve |
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE [SKYACTIV-G 2.0].) |
|
Ventilation hose |
? |
Exhaust Gas Purification System
Purpose, Outline
Purifies contaminants (HC, CO, NOx) in the exhaust gas by utilizing the chemical
reactions of the three-way catalytic converter.
System Diagram
Structure
T ...
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 ...
Other materials:
Location of the Tire Label (Placard)
You will find the tire label containing tire inflation pressure by tire size
and other important information on the driver's side B-pillar or on the edge of
the driver's door frame.
SAMPLE
Recommended Tire Inflation Pressure
On the tire label you will find the recommended tire infla ...
Front Fog Light Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the screws and bolt.
3. Pull up the front under cover No.1 and remove the mudguard screw shown in
the figure.
4. Disconnect the connector.
5. While pressing the clip tab in the direction of the arrow (1) shown in the
figure ...
Cylinder Head Gasket Replacement
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
Fuel vapor is hazardous. It can very easily ignite, causing serious injury
and damage. Always keep sparks and flames away from fuel.
Fuel line spills and leakag ...
