50 mm (2 in.) square paper card over end of inlet hose.
The card should be drawn to the end of the inlet hose
within 15 seconds. If not, a leak or restriction exists in
the PCV vacuum circuit.
(3) If card does not hold to end of inlet hose, discon-
nect PCV valve from cylinder head cover or adapter.
Vacuum hissing sound should be heard and engine
should run steady. Place a finger over end of PCV valve
(Fig. 14). The check valve in the PCV valve should click
and rattle when PCV valve is shaken.
(4) Remove PCV valve from vacuum source hose.
The engine should run very erratically or stall. If not, a
vacuum restriction or blockage exists at the vacuum
source.
FUEL RECOMMENDATIONS
Chrysler Corporation recommends that only fuel
purchased from a reputable retailer be used. Use high
quality, unleaded gasoline to provide satisfactory
driveability and highest fuel economy. Gasoline con-
taining detergent and corrosion control additives are
desireable. If the engine develops spark knock (audible
ping), poor performance, hard starting or stalling,
purchase fuel from another source. Engine perfor-
mance can vary when using different brands of gaso-
line with the same octane rating. Occasional light
engine spark knock under heavy acceleration, at low
speed or when vehicle is heavily loaded is not harmful.
Extended periods of spark knock under moderate ac-
celeration or at cruising speed can damage the engine.
The cause of excessive spark knock condition must be
diagnosed and corrected. For diagnostic procedures
refer to Group 14, Fuel System and Powertrain Diag-
nostic Procedures manual.
SELECTING GASOLINE
CAUTION:Do not use fuel containing METHANOL
(methyl or wood alcohol), damage to fuel system will
result.
Do not use leaded gasoline, damage to catalytic
converter will result and vehicle will not conform to
emission control standards.
Fig. 11 PCV System—3.0L Engine
Fig. 12 PCV System—3.3L Engine
Fig. 13 PCV System—2.5L EFI Engine
Fig. 14 PCV Valve Test
.
LUBRICATION AND MAINTENANCE
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