JAC J2 - Page 134

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Maintenance Manual for J2 Sedan
Mechanical Part of Engine
133
2. Inspection of
Element
Check the PCV (forced ventilation of crankcase) valve as shown below:
1)
Operation
principle
Operation
principle list
of PA
V valve
V
alve
chamber
cover
side
V
alve
chamber
cover
side
Operating
state
of
engine
Out
of
work
Operating
state
of
engine
Idling
or
deceleration
PCV
valve
Out
of
work
PCV
valve
Fully
open
V
ariation
of
vacuum
Limit
ed
V
ariation
of
vacuum
Slight
V
alve
chamber
cover
side
V
alve
chamber
cover
side
Operating
state
of
engine
Normal
operation
Operating
state
of
engine
Improper acceleration and
high speed
PCV
valve
Normal
operation
PCV
valve
Retardant
operation
V
ariation of
vacuum
Large
V
ariation of
vacuum
Extremel
y
large
No vacuum
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High vacuum
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Moderate
No