911 Carrera Coupe F6-3164cc 3.2L (1984)
5. Check CO. If CO is not as specified, make correction on air flow sensor.
Insert Special Tool 9156 or a standard flexible screwdriver.
Turning clockwise = richer mixture
Turning anticlockwise = leaner mixture
Note: Switch off electric equipment while making adjustments.
Make adjustments as quickly as possible to avoid excessive heat in intake ports, which would cause wrong CO values.
Intake air temperature approx. 15 to 35° C / 59 to 95° F
6. Connect oxygen sensor plug after completing adjustments.
7. Check idle speed, correcting if necessary. This requires stopping function of the idle volumetric control.
a) A test socket is located on engine central electric board in engine compartment on left-hand side.