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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:

Electric Variable Valve Timing Motor/Driver Removal/Installation
WARNING: A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing. CAUTION: Applying excessive force (force of 100 N {10.2 kgf, 22.5 lbf} or more) to the electric variable valve timing motor/driver may cause a malfunction. When ...

Spare Tire and Tool Storage
Spare tire and tools are stored in the locations illustrated in the diagram. Except Mexico Mexico Jack To remove the jack 1. Open the trunk board. 2. Secure the trunk board by attaching the hook to the head restraint. Without luggage compartment cover With luggage compartment cover ...

Multiplex Communication System
A controller area network (CAN) system has been adopted in which multiplex communication is performed using a single communication path. A high-speed controller area network (HS-CAN) has been adopted for the communication between the following modules: PCM ...

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