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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 675
Fig. 5: Secondary vacuum break adjustment on E2SE carburetors
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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.
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 677
Fig. 7: Air valve spring adj ustment on E2SE carburetors
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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.
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 679
Fig. 9: Air valve rod adju stment on E2SE carburetors
ROCHESTER E4ME AND E4MC 1. Using a vacuum source, seat the vacuum break plunger. The air valve
must be closed.
2. Insert a 0.025 in. (0.635mm) pl ug gauge between the rod and the end of
the slot.
3. To adjust, bend the air valve rod.
Fig. 10: Front air valve rod adj ustment on E4ME/E4MC carburetors
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 680
Fig. 11: Rear air valve rod adj ustment on E4ME/E4MC carburetors
CHOKE LEVER ADJUSTMENT
ROCHESTER E2SE 1. If the choke cover is riveted, dr ill out the rivets and remove the choke
cover with the spring assembly.
2. Place the fast idle screw on the high step of the fast idle cam. Push the
intermediate choke lever until t he choke valve is closed.
3. Place a 0.085 in. (2.16mm) plug gauge in the choke housing hole and move the choke lever to touch the plug gauge.
4. Support the intermediate choke r od and bend it to make adjustment.
5. To install choke cover, use pop rivets.
Fig. 12: Choke lever adjus tment on E2SE carburetors
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 681
ROCHESTER E4ME AND E4MC
1. If the choke cover plate is riveted, drill out the rivets and remove the plate assembly.
2. Place the fast idle cam follower on t he high step of the fast idle cam.
3. Lift up on the choke lever to close the choke valve and insert a 0.120 i\
n. (3mm) plug gauge into the choke housi ng hole. The choke lever should
just touch the gauge.
4. To adjust, bend the choke rod.
5. To replace the cover plate, rivet in place.
Fig. 13: Choke lever adjustm ent on E4ME/E4MC carburetors
CHOKE ROD FAST IDLE CAM ADJUSTMENT
ROCHESTER E2SE 1. Attach a rubber band to the intermediate choke lever and open the
throttle to allow the choke plate to close.
2. Set up the angle gauge and set the angle to specifications.
3. Place the fast idle screw on the se cond step of the cam, against the high
step.
4. Move the choke shaft lever, to open the choke valve, make contact with
the black closing tang.
5. Support the fast idle cam rod and bend the rod to make the adjustment.
Adjustment is completed when the bubble of the angle gauge is level.
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GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 682
Fig. 14: Choke rod fast idle cam adjustment on E2SE carburetors