Toyota TERCEL 1985 Repair Manual page 96

EC-8
EMISSION CONTROL SYSTEMS - Positive Crankcase Ventilation (PCV) System
Cylinder Head Side
Intake Manifold Side
INSPECTION OF PCV VALVE
Clean Hose
1.
2.
3.
EC1011
4.
.Clean Hose
5.
EC1012
INSPECTION OF PCV HOSES AND
CONNECTIONS
VISUALLY INSPECT HOSES, CONNECTIONS AND
GASKETS
REMOVE PCVVALVE
ATTACH CLEAN HOSE TO PCV VALVE
BLOW FROM CYLINDER HEAD SIDE
Check that air passes through easily.
CAUTION: Do not suck air through the valve.
Petroleum substances inside the valve are harmful.
BLOW FROM INTAKE MANIFOLD SIDE
Check that air passes through with difficulty.
If the PCV valve fails either of the checks, replace it.
REINSTALL PCV VALVE
Check for cracks, leaks or damage.