Airflow Sensor Plate
- With engine off, upper edge of airflow sensor plate must be .118-.875" (1.9-3.0 mm) below edge of air cone. Preferred setting is 118" (1.9 mm). See Fig 1 . If sensor plate position is incorrect, adjust by bending wire clip located under sensor plate.
- Airflow sensor plate free play is measured on the fuel distributor side of air plate. See Fig 2
. Remove and ground ignition coil wire. Crank engine for 10 seconds. Slightly lift airflow sensor plate until resistance is felt. Clearance should be .039-.118" (1.0-3.0 mm).CAUTION: DO NOT scratch venturi of airflow sensor or bend leaf spring.
- If airflow sensor plate clearance is incorrect, adjust by turning control plunger stop screw. Loosen stop screw lock nut and turn screw. Turning stop screw clockwise increases clearance about .05" (1.3 mm) for each 1/4 turn. Recheck free play and idle speed.