volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Fuel Control System - Checking, Removal and Installation|Page 3911 > < Fuel Control System - Checking, Removal and Installation|Page 3909
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Work sequence

Varying measurement a:
-

adjust idle travel of air flow sensor plate at stop screw for control plunger

(Distance a = approx. 0.6 mm (0.024 in.) between stop screw and flange of hex nut)

^

turn stop screw clockwise - clearance larger

^

turn stop screw counterclockwise - clearance smaller

^

1/4 turn of stop screw - approx. 1.3 mm/0.05 in. difference on sensor plate

CAUTION

After adjustment, readjust idle speed and current reading mA (CO value).

Sensor plate lever, basic adjustment

Note

Always perform basic adjustment of lever when replacing fuel distributor or air flow sensor.

Work sequence

-

check distance between contact surfaces for fuel distributor on air flow sensor and roller for sensor plate lever. If necessary, adjust via mixture
adjustment screw

^

specification: 19.0 +/- 0.1 mm (0.748 - 0.004 in.)

Control plunger, removing/installing

Work sequence

Fuel Control System - Checking, Removal and Installation|Page 3911 > < Fuel Control System - Checking, Removal and Installation|Page 3909