929 V6-3.0L SOHC (1989)
Positive Crankcase Ventilation Valve: Testing and Inspection
Checking PCV Valve
1.
Warm up the engine to the normal operating temperature and run it at idle.
2.
Disconnect the PCV valve together with the ventilation hose from the cylinder head cover.
3.
Block the valve opening and check that vacuum is felt. Replace the valve, if necessary.