Choke Secondary Vacuum Break; Float And Power Valve Economizer; Bown Vent; Choke Housing - Pontiac TRANS AM 1977 Service Manual

FUEL SYSTEM 6C-17
CARBURETOR
AUTOMATIC CHOKE
HEATER HOSE
HEATER HOSE
AUTOMATIC
/ \
CHOKE HOSE
~ i ~ r 6 ~ - 2 4 choke Hose
PULL-OFF ACTUATOR
468
3
Fig. 6C-25 Choke Secondary Vacuum Break
2. Remove retainer clips and choke operating rod. Then
remove five air horn screws and lock washers and-remove the
air horn.
3. Remove float hinge pin, float and fuel inlet needle.
Remove fuel inlet seat and gasket. The inlet needle and seat
are an assembly on
L4-15
1 engines. Remove power valve
economizer (Fig. 6C-26).
4. Remove bowl vent diaphragm (Fig. 6C-27).
5. Unless damage has occurred to the choke plates, shaft
or lever, no further disassembly of the air horn is necessary.
Choke Bi-Metal Coil L4-140
1. Remove choke water housing retaining screw, washer,
housing and gasket.
2. Remove three choke bi-metal retaining screws,
retainer ring, thermostat housing and gasket.
POWER VALVE
ECONOMIZER
T
BAFFLE
ATTACHING SCREW (3)
FUEL INLET
NEEDLE AND
FLOAT HIN
PIN
2962
Fig. 6C-26 Float and Power Valve Economizer
RETAINING SCREW (3)
f l
SOLENOID
B
SEAL
RETAINING CLI WASHER
296
Fig. 6C-27 Bown Vent
Choke Bi-Metal Coil L4-151
1. Remove three screws and remove retainer, element,
ground ring, and coil housing from choke housing (Fig. 6C-
29).
Choke Housing
1. Remove three screws from choke housing and remove
housing and disengage fast idle rod (Fig. 6C-30).
2. Remove "0" ring from vacuum passage (Fig. 6C-31).
3. Remove choke housing shaft nut, lock washer, lever,
spring retainer and cam from choke housing shaft.