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Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) Valve Inspection

Mazda CX-5 Service & Repair Manual / Engine / Emissions / 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 while the engine is idling.

NOTE:

3. Disconnect the negative battery cable..

4. Remove the intake manifold..

5. Remove the PCV valve and the oil separator as a single unit..

6. Verify that there is no airflow when pressure is applied to port B.


7. Verify that there is airflow when vacuum is applied to port B.

Positive Crankcase Ventilation (PCV) System
Purpose, Outline Prevents release of blow-by gas (unburnt gas) into the atmosphere. The intake manifold vacuum introduces blow-by gas to the intake manifold via the PCV valve and the ...

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 ...

Other materials:

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 ...

Front Beltline Molding Removal/Installation
CAUTION: Affix protective tape to the position shown in the figure. 1. Fully open the front door glass. 2. Insert a tape-wrapped flathead screwdriver and then detach clips A in the direction of arrow (1) shown in the figure. 3. Pull up the front side of front beltline molding ...

Wheel Hub Component Removal/Installation [Awd]
CAUTION: Performing the following procedures without first removing the ABS wheel-speed sensor may possibly cause an open circuit in the wiring harness if it is pulled by mistake. Before performing the following procedures, disconnect the ABS wheel-speed sensor connector (body side) ...

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