Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) System
Purpose, Outline
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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
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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:
Rear Side Frame Removal [Panel Replacement]
Symbol Mark
Removal Procedure
NOTE:
When drilling the 35 locations indicated by (A) and 4 locations indicated
by (C) shown in the figure, do not drill a hole all the way through or there
could be a problem when installing the new part.
1. Drill the 35 locations indicated by ...
Fog Lights
Use this switch to turn on the fog lights.
The fog lights will improve visibility at night and during foggy conditions.
To turn the fog lights on, rotate the fog light switch to the
position.
The headlight switch must be in the
position before turning on the fog lights.
To turn the fog lig ...
Crankshaft Pulley
Purpose, Function
The crankshaft pulley transmits the drive force to the auxiliary parts via
the drive belt.
The crankshaft pulley suppresses torsional vibration of the crankshaft.
Construction
The crankshaft pulley is installed to the front of the crankshaft.
...
