911 Turbo Cabriolet F6-3299cc 3.3L SOHC Turbo (1987)
Idle Speed: Adjustments
ADJUSTING IDLE
Adjusting Requirements:
Engine must be in perfect mechanical condition. Electric equipment must be switched off during adjustments. Adjustments must be completed as
quickly as possible, to avoid excessive heat in the intake ports and consequently wrong CO values.
Adjustments must be performed with the air cleaner mounted.
1. Install adapter US 8040 and CO tester US 4492 on the test connection.
2. Disconnect plug for oxygen sensor and connect CO tester to instructions supplied with equipment.
3. Insert a suitable plug in the air hose between the air pump and blowoff switching valve.
4. Run engine to operating temperature (80 to 90° C oil temperature).