Toyota 22R-E Service Manual page 421

EG2–144
ENGINE – EMISSION CONTROL SYSTEMS
PCV VALVE INSPECTION
1. REMOVE PCV VALVE
2. ATTACH CLEAN HOSE TO PCV VALVE
3. BLOW AIR FROM CYLINDER HEAD SIDE
Check that air passes through easily.
NOTICE: Do not suck air through the valve.
Petroleum substances inside the valve are harmful.
4. BLOW AIR FROM INTAKE MANIFOLD SIDE
Check that air passes through with difficulty.
If the PCV valve fails either check, replace it.
5. REINSTALL PCV VALVE
PCV HOSES AND CONNECTIONS
INSPECTION
VISUALLY INSPECT HOSES, CONNECTIONS AND
GASKETS
Check for cracks, leaks or damage.