lock CHEVROLET CAMARO 1982 Repair Guide

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 672
ROCHESTER E4ME AND E4MC
1. Remove the air horn and gasket from the float bowl. Hold the float retainer down firmly. Push the float down (lightly) against the needle.
2. Position a T-scale ov er the toe of the float
1/16 in. (1.6mm) from the end
of the float toe.
3. If the float level varies more than
1/16 in. (1.6mm) from the specified
setting, it must be reset.

Fig. 2: E4ME/E4MC float level adjustment
FLOAT LEVEL TOO HIGH 1. Hold the float retainer in place.
2. Push down on the center of the float until the correct level is obtained.
FLOAT LEVEL TOO LOW 1. Lift out the metering rods and remo ve the solenoid connector screws.
2. Turn the lean mixture solenoid screw clockwise, counting and recording
the number of turns required to seat the screw in the float bowl.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 673
3. Turn the screw counterclockwise and
remove it. Lift the solenoid and the
connector from the float bowl.
4. Remove the float and bend the arm up to adjust. The float must be
correctly aligned after adjustment.
5. To install the components, reverse the order of removal. Back out the
solenoid mixture screw t he number of turns that wa s recorded earlier.
THROTTLE LINKAGE
ROCHESTER E2SE
No adjustment of the thro ttle cable can be made.
ROCHESTER E4ME AND E4MC
Due to the design of the throttle cable, no adjustments of the throttle linkage can
be made.
CHOKE UNLOADER (PRIMARY)
ROCHESTER E2SE
1. Connect a rubber band to the in termediate choke lever and open the
throttle to allow the choke valve to close.
2. Set up the angle gauge and set the gauge to specifications.
3. Using a vacuum source, retract the vacuum break plunger. Make sure
that the air valve rod does not interf ere with the retraction of the vacuum
break plunger.
4. Support the vacuum br eak rod and make the adjustment by bending the
rod.

Fig. 3: Primary vacuum break adjustment on E2SE carburetors

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 676
ROCHESTER E4ME AND E4MC
1. Connect a rubber band to the green tang of the intermediate choke shaft.
2. Open the throttle to allow the choke valve to close.
3. Set up the angle gauge and set the angle to specification.
4. Using a vacuum source, retr act the vacuum break plunger.
The air valve rod must not restrict the vacuum break plunger from fully
retracting.
5. With the vacuum applied, turn t he adjusting screw or bend the vacuum
break rod until the bubble of t he angle gauge is centered.

Fig. 6: Secondary vacuum break adj ustment on E4ME/E4MC carburetors
AIR VALVE SPRING ADJUSTMENT
ROCHESTER E2SE 1. If necessary, remove the intermediat e choke rod to gain access to the
lock screw.
2. Loosen the lock screw and turn t he tension adjusting screw clockwise
until the air valve opens slightly.
3. Turn the adjusting screw counterclo ckwise until the air valve just closes;
continue turning the screw counterclock wise according to specifications.
4. Tighten the lock screw. Apply lithium grease to the spring and pin.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 678
ROCHESTER E4ME AND E4MC
1. Loosen the lock screw and turn the tension adjusting screw counterclockwise until the air valve partly opens.
2. Turn the tension adjus ting screw clockwise until t he air valve just closes,
then turn the screw clockwise a specified number of turns.
3. Tighten the lock screw and apply lithium grease to the spring contact
area.

Fig. 8: Air valve spring adjus tment on E4ME/E4MC carburetors
AIR VALVE ROD ADJUSTMENT
ROCHESTER E2SE 1. Set up the angle g auge on the air valve and set the angle to
specification.
2. Use a vacuum source to s eat the vacuum break plunger.
3. By applying light pressure to the ai r valve lever, rotate it in the opening
direction.
4. Support the air valve rod and bend it to make the adjustment.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 685
ROCHESTER E4ME AND E4MC
1. Connect a rubber band to the green tang of the intermediate shaft.
2. Open the throttle to allow the choke valve to close.
3. Set up the angle gauge and set the angle to specification.
4. Hold the secondary lockout lever away from the pin.
5. Hold the throttle lever in the wide-open position.
6. To adjust, bend the tang of the fast id le lever until the bubble of the angle
gauge is centered.

Fig. 18: Unloader adj ustment on E4ME/E4MC
SECONDARY LOCKOUT ADJUSTMENT
ROCHESTER E2SE 1. Push down on the inte rmediate choke lever to hold the choke valve wide-
open.
2. Open the throttle leve r until the end of the secondary actuating lever is
opposite the toe of t he lockout lever.
3. Insert a 0.025 in. (0.635mm) plug gauge.
4. To adjust, bend the lockout lever tang into contact with the fast idle cam.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 686

Fig. 19: Secondary lockout adj ustment on E2SE carburetors
ROCHESTER E4ME AND E4MC 1. With the choke and the throttle valves closed, insert a 0.015 in. (0.38mm) plug gauge between the lockout lever and the pin. To establish
clearance, bend the pin.
2. Push down on the fast idle cam and hold the choke valve wide open.
3. Insert a 0.015 in. (0.38mm) pl ug gauge sideways between the lockout
lever and the pin. To adjust, file the end of the pin.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 687

Fig. 20: Secondary lockout adjus tment on E4ME/E4MC carburetors
MIXTURE CONTROL (M/C) SOLENOID
TRAVEL TEST
These procedures are performed on four barrel models only. Before checking
the mixture control solenoid travel, it may be necessary to modify the float
gauge J-9789-130 or equivalent (used to ex ternally check the float level).
This should be done by filing or grinding sufficient material off the gauge to
allow for insertion down the vertical D-shaped hole in the air horn casting
(located next to the idle air bleed valve cover).
Check that the gauge freely enters the D-shaped vent hole and does not bind.
The gauge will also be used to determine t he total mixture control solenoid
travel.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 688
With the engine OFF and the air cleaner re
moved, measure the control solenoid
travel as follows:
1. Insert a modified float gauge J- 9789-130 or equivalent down the D-
shaped vent hole. Press down on the gauge and release it.
2. Observe that the gauge moves freel y and does not bind. With the gauge
released (solenoid in the up position), be sure to read it at eye level and
record the mark on the gauge (in inc hes/millimeters) that lines up with
the top of the air hor n casting (upper edge).
3. Lightly press down on the gauge until bottomed (solenoid in the down
position). Record (in inches/millimeters) the mark on the gauge that lines
up with the top of the air horn casting.
4. Subtract the gauge up dimension from gauge dimension. Record the
difference (in inches/millimet ers). This difference is total solenoid travel.
5. If total solenoid travel is not within
3/32-5/32 in. (2.4-3.9mm), perform the
mixture control solenoid adjustment s. If the difference is within
specifications, proceed to the id le air bleed valve adjustment.
If adjustment is required, it will be necessary to remove the air horn and drive
out the mixture control solenoid screw pl ug from the under side of the air horn.

Fig. 21: Checking the solenoid plunger travel
ADJUSTMENTS
Before making adjustment to mixture cont rol solenoid, verify that the plunger
travel is not correct.
1. Remove air horn, mixture control solenoid plunger, air horn gasket and
plastic filler block, using normal service procedures.
2. Check carburetor for caus e of incorrect mixture:
a. M/C solenoid bore or plunger worn or sticking
b. Metering rods for incorrect part number, sticking or rods or springs
not installed properly

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 689
c. Foreign material in jets
3. Remove throttle side metering rod. Install mixture control solenoid
gauging tool, J-33815-1, BT-8253-A, or equi valent, over the throttle side
metering jet rod guide and temporarily reinstall the solenoid plunger into
the solenoid body.
4. Holding the solenoid plunger in the DOWN position, use tool J-28696-10,
BT-7928, or equivalent, to turn lean mixture solenoid screw
counterclockwise until the plunger br eaks contact with the gauging tool.
Turn slowly clockwise until the pl unger makes contact with the gauging
tool. The adjustment is correct when t he solenoid plunger is contacting
both the solenoid stop and the gauging tool.
If the total difference in adjustment required less than
3/4 turn of the lean mixture
solenoid screw, the original setting was within the manufacturer's specifications.
5. Remove solenoid plunger and gaugi ng tool and reinstall metering rod
and plastic filler block.
6. Invert air horn and remove rich mixt ure stop screw from bottom side of
air horn, using tool J-28696-4, BT-7967-A, or equivalent.
7. Remove lean mixture screw plug and the rich mixture stop screw plug
from air horn, using a punch.
8. Reinstall rich mixtur e stop screw in air horn and bottom lightly, then back
screw out
1/4 turn.
9. Reinstall air horn gasket, mixture c ontrol solenoid plunger and air horn to
carburetor.
10. Adjust the M/C solenoid pl unger travel as follows:
a. Insert float gauge down D- shaped vent hole. Press down on
gauge and release, observing th at the gauge moves freely and
does not bind. With gauge released, (plunger UP position), read at
eye level and record the reading of the gauge mark (in
inches/millimeters) that lines up with the top of air horn casting,
(upper edge).
b. Lightly press dow n on gauge until bottomed, (plunger DOWN
position). Read and record (in inc hes/millimeters) the reading of
the gauge mark that lines up with top of air horn casting.
c. Subtract gauge UP position from the gauge DOWN position and
record the difference. This difference is the total plunger travel.
Insert external float gauge in vent hole and, with tool J-28696-10,
BT-7928, or equivalent, adjust rich mixture stop screw to obtain
5/32 in. (3.9mm) total plunger travel.
11. With solenoid plunger travel corre ctly set, install plugs (supplied in
service kits) in the air horn, as follows:
a. Install plug, hollow end down, into the access hole for the lean
mixture (solenoid) screw. Use suit ably sized punch to drive plug
into the air horn until t he top of plug is even with the lower. Plug
must be installed to retain the sc rew setting and to prevent fuel
vapor loss.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 692
IDLE AIR VALVE
A cover is in place over t
he idle air bleed valve. Also , the access holes to the
idle mixture needles are s ealed with hardened plugs. This is done to seal the
factory settings, during original equipment production. These items are NOT to
be removed unless required for cleaning, part replacement, improper dwell
readings or if the System Performance Check indicates the carburetor is the
cause of the trouble.
ROCHESTER E4ME AND E4MC
1. With engine OFF, cover the internal bowl vents and inlet to bleed valve
and the carburetor air intakes with maski ng tape. This is done to prevent
metal chips from entering.
2. Carefully drill rivet head of idle air bleed cover, with 0.110 in. (2.8mm) drill bit.
3. Remove rivet head and all pieces of rivet.
4. Lift cover off air bleed valve and bl ow out any metal shavings, or use a
magnet to remove excess metal.
CAUTION - Always wear eye protection when using compressed air.
5. Remove masking tape.
6. Start engine and allow it to reac h normal operating temperature.
7. Disconnect the vacuum hose from t he canister purge valve and plug it.
8. While idling in D for automatic transmission or N for manual
transmission, slowly turn the valve c ounterclockwise or clockwise, until
the dwell reading varies within the 25-35 degree range, attempting to be
as close to 30 degrees as possible.
Perform this step carefully. The air bleed valve is very sensitive and should be
turned in
1/8 turn increments only.
9. If the dwell reading d oes not vary and is not within the 25-35 degree
range, it will be necessary to remove the plugs and to adjust the idle
mixture needles.