Checking And Adjusting Rest Position Of Air Flow Sensor Plate

Checking

Air Flow Sensor Location

1. Pull off high tension wire 4 from distributor and operate starter approx. 10 seconds.

2. Upper edge of air flow sensor plate must be flush with beginning of venturi cone or at most a max. of 0.5 mm higher (strive for lowest position).

3. Air flow sensor plate must be horizontal and centered in venturi.

Adjusting

An excessively high air flow sensor plate setting can be corrected by driving down the stop spring guide pin with a drift and light hammer.

Note

Adjust very carefully, so that guide pin is not driven in too deep.

Avoid repeated adjustments in both directions, since this would loosen press fit of pin.

1985 Porsche 911 Window Stop Adjustment
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