Toyota Supra 1990 Manual page 162

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EMISSION CONTROL SYSTEMS -

Dash Pot (DP) System

If not at the specified speed, adjust with the DP adjusting

CHECK OPERATION OF VTV

Set the DP speed in the same procedure as above; (a)

Release the pinched hose and check that the engine

returns to idle speed in approx_ 1 second_

IF NO PROBLEM IS FOUND WITH THIS INSPECTION. THE

SYSTEM IS OKAY; OTHERWISE INSPECT EACH PART

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