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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:

Rear Mount Camera Removal/Installation
CAUTION: The audio unit communicates with the rear mount camera and records the presence/non-presence of the rear mount camera when the ignition is switched to ACC or ON (engine off or on) after connecting the negative battery cable. If the commander switch is installed wit ...

Remote Transmitter Battery Voltage Inspection
NOTE: Because the remote transmitter battery power cannot be determined using the battery itself, determine by the remote transmitter battery low warning operation conditions. Operation procedure for remote transmitter battery low warning 1. Place the remote transmitter inside t ...

Front Seat Belt Removal/Installation
WARNING: Handling the front seat belt (pre-tensioner seat belt) improperly can accidentally deploy the pre-tensioner seat belt, which may seriously injure you. Read the air bag system service warnings and cautions before handling the front seat belt. (See AIR BAG SYSTEM SERVICE W ...

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