Lynx L4-116 1.9L VIN J FI HP (1986)
Positive Crankcase Ventilation Valve: Description and Operation
Fig. 56 PCV valve
The PCV valve consists of a needle valve, spring, and housing. When the engine is OFF, the spring holds the needle valve closed to stop vapors
from entering the intake manifold. When the engine is running, manifold vacuum unseats the valve allowing crankcase vapors to enter the intake
manifold.
