LS 460 V8-4.6L (1UR-FSE) (2007)
Positive Crankcase Ventilation Valve: Testing and Inspection
INSPECTION
1. INSPECT VENTILATION VALVE
a. Install a clean hose to the ventilation valve.
b. Check the ventilation valve operation.
1. Blow air into the case side, and check that air passes through easily.
CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are hazardous to your health.
2. Blow air into the intake manifold side, and check that air passes through with difficulty.
If the result is not as specified, replace the ventilation valve.
c. Remove the clean hose from the ventilation valve.