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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 Seat Back Removal/Installation
CAUTION: When removing or putting in the rear seat, contact with the surrounding areas of the vehicle could cause scratches and damage. When removing or putting in the rear seat, always use two or more persons to perform the work and be careful not to scratch or damage the rear seat ...

Steering Gear And Linkage
Purpose/ Function The rotational movement input from the intermediate shaft is converted to a linear movement in the horizontal direction of the steering rack by the rack and pinion mechanism, and then transmitted to the tires and wheels. Construction A size and weight-redu ...

Flywheel Inspection [C66 M R]
1. Remove the flywheel.. 2. Perform the following procedures to inspect the flywheel. If there is any malfunction or it exceeds the maximum specification, replace the flywheel.. a. Inspect the surface that contacts the clutch disc for scratches, nicks, and discoloration. ...

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