Toyota Avalon Service & Repair Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY)

(a) Install a hose to the PCV valve (ventilation valve sub-assembly).

(b) Check the PCV valve (ventilation valve sub-assembly) operation.

(1) Blow air into the cylinder head sub-assembly side, and check that air passes through easily.

*a

Hose

*b

Air

Cylinder Head Sub-assembly Side

CAUTION:

Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the PCV valve (ventilation valve sub-assembly).

(2) Blow air into the intake manifold side, and check that air passes through with difficulty.

*a

Hose

*b

Air

Intake Manifold Side

CAUTION:

Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the PCV valve (ventilation valve sub-assembly).

(c) Remove the hose from the PCV valve (ventilation valve sub-assembly).

    Components

    Installation

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