740 L4-2.3L SOHC VIN 88 B230F (1985)
Fig. 370 REMOVE CO ADJUSTMENT SEAL
-
Drill two 2 mm (0.08 in.) holes in plug.
-
Withdraw plug with circlip pliers.
-
Start engine.
-
Adjust CO content. CO screw should be turned until test diode starts to flash.
Fig. 371 CO ADJUSTMENT
Counterclockwise reduces CO
Clockwise increases CO
Adjustment range = 15 turns.
-
Seal CO adjustment screw
Always use a new plug.
-
Push plug into position.
-
Disconnect test instruments.
