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
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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:
Refrigerant System Service Warnings
Handling Refrigerant
Avoid breathing air conditioning refrigerant or lubricant vapor. Exposure
may irritate eyes, nose and throat. Also, due to environmental concerns, we
urge use of recovery/recycling/recharging equipment when draining HFC-134a from
the air conditioning system. If a ...
Instrument Cluster Inspection
Speedometer inspection
Using a speedometer tester
1. Adjust the tire pressure to the specification.
2. Using a speedometer tester, verify that the tester reading is as indicated
in the following table. km/h
Speedometer tester indication (km/h)
Allowable rang ...
Ignition System [Skyactiv G 2.0]
Outline
A direct ignition coil for independent ignition control has been adopted.
An ignition coil built-into the ion sensor has been adopted.
An iridium spark plug has been adopted.
Structural View
Structure
Consists of the following parts:
...
