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80009
Rg. 1J-14S PCV Valve Test
(3) Replace valve having flow rate above or below
specification. Ensure correct PCV valve is used for
replacement.
PCV Valve Flow Rate Chart
Engine
Mcnifold
Vacuum
(in. Ho.)
Air Flow CFM (liters/second)
Black
Four-Cylinder
Yellow
Six-Cylinder
Black
Eight-Cylinder
15
0.5-1.0
(.236-.472J
16
1.34-1.63
(.003-.004)
13
1.30-1.90
(.003-.005)
6
1.05-1.85
U96-.873)
7
2.70-3.79
(.007-.010)
5
1.21-2.26
(.003-.006)
3
1.5-2.5
(.708-1.18)
3.30-4.39
(.009-.012)
2
1.28-2.56
(.003-.007)
80586
FUEL SYSTEMS 1J-79
PCV VALVE AIR INLET FILTER MAINTENANCE
Perform PVC valve air inlet filter maintenance at the
intervals specified in the Maintenance Schedule listed in
Chapter B.
Four- and Six-Cylinder Engines
A polyester non-woven felt PCV air inlet filter is
located in a filter retainer in the air cleaner.
(1) Rotate retainer to remove from air cleaner (fig.
1J-149).
INLET
FILTER
AJ43048
Rg. 1J-149 PCV Air Inlet Filler-Four- and Six-Cylinder Engines
(2) Clean filter in kerosene.
(3) Install filter and retainer in air cleaner.
Eight-Cylinder Engine
A polyester non-woven felt PCV air inlet filter is
located in the sealed oil filler cap.
(1) Remove oil filler cap from engine.
(2) To clean, apply light air pressure in reverse di
rection of normal flow (through filler tube opening of
cap).
(3) Install oil filler cap and connect hose from air
cleaner to oil filler cap.
NOTE: Replace the filler cap iffilter is deteriorated.
THERMOSTATICALLY
CONTROLLED AIR CLEANER
(TAC) SYSTEM
Page
Air Cleaner Trap Door U-82
enteral
1J-79
Operation—TAC System
1J-SO
GENERAL
The Thermostatically Controlled Air Cleaner (TAC)
System provides heated air for the carburetor during
Page
Testing—TAC System 1J-81
Thermal Stater U-82
engine warm-up when the outside (ambient) air temper
ature is low. Warm intake air permits the carburetor to
have a leaner air/fuel mixture, reducing hydrocarbon
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