Positive Crankcase Ventilation: Testing and Inspection

POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM

INSPECTION

1. INSPECT PCV VALVE




a. Disconnect the PCV hose from the PCV valve.
b. Remove the PCV valve.




c. Connect a clean hose to the PCV valve.
d. Inspect the PCV valve operation.
1. Blow air from the cylinder head side, and check that air passes through smoothly.

CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.




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

If operation is not as specified, replace the PCV valve.

e. Disconnect the clean hose from the PCV valve.




f. Reinstall the PCV valve.
1. Apply adhesive to 2 or 3 threads.

Adhesive:
Part No. 08833-00070, THREE BOND 1324 or equivalent

2. Reinstall the PCV valve.

Torque: 19 N.m (193 kgf.cm, 14 ft.lbf)




2. INSPECT PCV HOSES AND CONNECTIONS

Visually check for cracks, leaks or damage.
If the PCV valve and connections are damaged, repair or replace it.