Check & Adjust CO% and Idle Speed

Repairs to the Air Supply or Fuel Delivery Systems can change idle speed and CO%.

CIS.027

Cars Without Oxygen Sensor

  • (See engine sticker or page 13 for exact procedure. Refer to pages 19 and 20 for specifications.)

Cars With Oxygen Sensor

  • (See engine sticker or pages 13 to 18 for exact procedure. Refer to pages 19 and 20 for specifications.)

 

turning the CO screw clockwise INCREASES CO%

turning the CO screw counter clockwise DECREASES CO%


 

turning the idle speed screw clockwise DECREASES IDLE

turning the idle speed screw counterclockwise INCREASES IDLE


 

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