Passat L4-1984cc 2.0L DOHC (9A) (1990)
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Air/Fuel Mixture: Locations
CO. Adjustment Screw
CIS-E CO Adjustment Screw
The CO Adjustment Screw is located between the air flow sensor and the fuel distributor it can only be reached and adjusted after removing the
anti-tampering plug in the top of the air flow sensor housing.
