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6C-30
1977 PONTIAC SERVICE MANUAL
CLEANING AND INSPECTION
The carburetor parts should be cleaned in cold
immersion type cleaner.
C AUTI 0 N
:
The electric choke, solenoiil, rubber
parts, plastic parts, diaphragms, pump plungers,
should not be put in immersion type cleaner as they
will swell, harden or distort.
1. Thoroughly clean all metal parts and blow dry with
parts are free of burrs and dirt.
2. Check, repair or replace the following parts if the
following problems were encountered.
A.
Flooding
1.
Inspect float needle seat for dirt, deep wear grooves,
scores and proper seating.
2. Inspect float, float arm and hinge pin for distortion,
binds and burrs. Check float for leaks and/or being loaded
compressed air. Make sure all fuel passages and metering
(heavier than normal).
V I S U A L L Y CHECK
FOR F L O A T A L I G N M E N T
A I R H O R N GASKET
I
FLOAT LEVEL ADJUSTMENT
AIR HORN RIGHT SIDE
@
U P TO ALLOW FLOAT
TO H A N G FREE
(GASKET I N PLACE)
ASURE SPECIFIED
0
DISTANCE FROM
BEND FLOAT T
GASKET SURFACE TO
ADJUST FOR PROPER
T TOE OF FLOAT
SETTING
AT M A X I M U M
FLOAT DROP ADJUSTMENT
U
DROP
-- -
- -
-
.
-
GAUGE FROM TOP OF
A I R HORN RING TO TOP
OF PUMP ROD
\
n
HOLD THROTTLE
VALVES COMPLETELY
CLOSED
I
PUMP ROD ADJUSTMENT
Fig.
6C-52 2GC-2GE Adjustment Procedures
CARB. NO.
170571 43
144
145
146
148
446
447
448
lo8
110
CARB. NO.
17057 143
144
145
146
148
446
447
448
108
110
CARB. NO.
-
AUG E
-
7/16"
7/16"
711 6"
711
6"
7 / 1 6
711 6"
7/16"
7/16"
518"
518"
iAUGl
1-5/32"
1-5/32"
1-5/32"
1-5/32'
1-5/32'
1-5/32'
1-5/32'
1-5/32'
1-1
14"
1-114"
-
iAUGl
8
-1 9/32
1-1 9/32
1-1 9/32
1-9/16"
1-911 6"
1-1 9/32
I
-1 9/32
1 -1 9/32
1-518"
1-518"
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