Nissan Juke Service and Repair Manual : Structure and operation

Positive Crankcase Ventilation

This system returns blow-by gas to the intake manifold.


This system returns blow-by gas to the intake manifold.

The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold.

During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV valve.

Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.

The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover.

Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.

The flow goes through the hose connection in the reverse direction.

On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go through the hose connection to the air inlet tubes under all conditions.

System


    Engine control system
    Engine control system : Component Parts Location ENGINE ROOM COMPARTMENT 1. Boost control actuator 2. Turbocharger boost control solenoid valve 3. A/F sensor 1 4. Recirculation valve 5. EV ...

    System
    ...

    Other materials:

    P0117, P0118 ECT sensor
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition swit ...

    Glow plug
    Exploded View 1. Glow plug Engine front : Nm (kg-m, ft-lb) Removal and Installation REMOVAL CAUTION: Remove glow plug only if necessary. If carbon adheres, it may be stuck and broken. 1. Disconnect the battery cable from the negative terminal. 2. Remove cowl top extension. Refer to EX ...

    B1130 side air bag module RH
    DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.CHECK SELF-DIAG RESULT With CONSULT-III 1. Turn ignition switch ON. 2. Perform Self Diagnostic Result mode of AIR BAG using CONSULT-III. Without CONSULT-III 1. Turn ignition switch ON. 2. Check the air bag warning lamp statu ...