Pontiac tempest 1968 Service Manual page 324

E N G I N E FUEL
6B-17
GUAGE B E T W E E N
CHOKE VALVE AND
AIR HORN W A L L
Fig. 6B-37 Unloader Adjustment
UNLOADER (Fig. 6 1 - 3 7 )
1. Hold choke valve in closed position by applying
a light force to the choke coil lever.
2. Rotate throttle lever to wide open throttle valve
position.
3. Bend unloader tang on throttle lever to obtain
specified dimension between lower edge of choke
valve (at center) and air horn wall.
CHOKE COIL ROD ADJUSTMENT (Fig. 6B-38)
1. Hold choke valve closed.
2. Pull upward on coil rod to end of travel.
Fig. 6B-38 Choke Coil Rod Adjustment
3„ Bottom of rod end which slides into hole in
choke lever should lay freely in notch on the choke
lever.
4. Bend choke coil rod at point shown to adjust.
5. Connect coil rod to choke lever and install re­
taining clip.
FAST IDLE ADJUSTMENT ON CAR
1. Warm up engine.
2. Place fast idle cam follower on top step of fast
idle cam.
3. With cam follower held against top step, insert
screw driver in adjustment slot and bend tang
towards or away from cam to obtain specified rpm.
ROCHESTER 2GV CARBURETOR
¥-8 ENGINE
Carburetor Model
Number Usage
7028060 400 Automatic Trans.
7028062 350 Automatic Trans.
7028066 400 Manual Trans.
7028071 350 Manual Trans.
ADJUSTMENTS ON CAR
All Rochester 2GV adjustments can be performed
on the car. With the exception of idle speed and
mixture adjustment all adjustments are included in
the OVERHAUL AND ADJUSTMENTS procedure.
Following are idle speed and mixture adjustments.
IDLE SPEED AND MIXTURE ADJUSTMENT
With engine at operating temperature adjust idle
speed following the procedure at the end of Section
6D.