Passat L4-1984cc 2.0L DOHC (9A) (1990)
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adjust rest position clearance (dimension "a") using adjustment nut (arrow)
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a = 1.9 + 1.1 mm
CAUTION: Do not bend leaf spring while performing adjustment.
Sensor plate free play, checking
Requirements
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sensor plate rest position OK
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CO adjustment OK
NOTE: Free play is the clearance between the control plunger and sensor plate lever (right arrow), measured on the side of the sensor plate closest
to the fuel distributor (left arrow).
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operate starter or remote control VAG 1348/3A for approx. 10 seconds
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lift sensor plate slightly until resistance is felt
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free play: 0.5 mm minimum
3.0 mm maximum (up to edge of venturi)
If free play NOT OK
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adjust free play on fuel distributor via control plunger
Sensor plate free play, adjusting at fuel distributor
Requirement
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CO adjustment OK
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adjust sensor plate free play using wrench VW 674/2 on control plunger stop screw