Positive Crankcase Ventilation (Pcv) System; Pcv Valve Functional Test - Jeep 1987 Wrangler Workshop Manual

ENGINES
JK1
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
GENERAL
INFORMATION
The P C V system consists of an air inlet filter, a
flow-control (PCV) valve plus associated hoses,
and a P C V solenoid, The air inlet filter is located
inside the air cleaner housing.
Six-Cylinder Engine
Carburetor
PCV Valve
PCV Air Out
PCV Air In
PCV Filter
PCV Solenoid
840239
PCV VALVE FUNCTIONAL TEST
Test the valve at idle speed for the correct flow
rate (l/s or cfm).
The engine intake manifold vacuum level must
be at least 47.28 kPa (14 in. Hg).
When determining the vacuum level, connect
the vacuum gauge to a fitting that is as centrally
located as possible on the intake manifold.
42017
B-243