780 V6-2849cc 2.8L SOHC B280F (1987)
Fig. 371 CO ADJUSTMENT
15.
Remove plug with needle nose or circlip pliers.
16.
Start engine and run to operating temperature.
17.
Adjust CO content to 0.6 %. Adjusting range for screw is 15 turns. Counter clockwise reduces CO content, clockwise increases CO content.
18.
Reconnect Lambda sond (oxygen sensor).
19.
Turn off engine. Reinstall oil filler cap. Disconnect all test equipment and reinstall test plugs into exhaust pipe.
20.
Seal CO adjustment screw with new plug. Tap new plug into position.