Porsche 928 Workshop Manual page 412

928
Electronic Fuel Injection - LH-Jetronic
24
5.Insert plug (blue) spare part No.
944 606 935 01 in CO-adjustment
screw apperture.
Recheck idle speed
Connect separate rev. counter in
accordance with manufacturer's
instructions
Idle speed 675 + 25 rpm
Printed in Germany
- XVI.1987
Adjusting Idle without Catalytic
24 - 215
Converter