A5. Check Operation Of Crankcase Emission Control System - Mitsubishi PAJERO IV Service Manual

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A5. CHECK OPERATION OF
CRANKCASE EMISSION CONTROL
SYSTEM
BREATHER HOSE
Breather hose
1. Inspect the breather hose for cracks or damage.
2. Clean the inside of the breather hose if neces-
sary.
3. Inspect the ventilation filter for clogging.
VENTILATION HOSE
1. Check entire circumference and length of hoses
using a mirror as required.
2. Check all clamps for tightness and the connec-
tions for leakage.
3. Hoses should be replaced immediately if there is
any evidence of deterioration or damage.
POSITIVE CRANKCASE VENTILATION
SYSTEM CHECK
Ventilation hose
PERIODIC INSPECTION AND MAINTENANCE
OPERATIONS INSIDE THE ENGINE COMPARTMENT
M6020200700347
AC610025 AB
PCV valve
AC610047 AB
1. Remove the ventilation hose from the PCV
(Positive crankcase ventilation) valve.
2. Remove the PCV valve from the rocker cover.
3. Reinstall the PCV valve at the ventilation hose.
4. Start the engine and run at idle.
<6G72>
<6G75>
5. Place finger at the opening of the PCV valve and
check that vacuum of the intake manifold is felt.
NOTE: At this moment, the plunger in the PCV
valve moves back and forth.
6. If vacuum is not felt, clean the PCV valve or
replace it.
7. Apply a small amount of new engine oil to the
O-ring on the PCV valve, and tighten to the
specified torque. <6G75>
Tightening torque: 2.5 ± 0.4 N⋅ m
PCV valve
AC305653AD
PCV valve
AC609736AC