Create direct access to the throttle valve. Start the engine to start cleaning. Spray the Throttle Valve Cleaner across the entire area of the throttle valve in intervals of 2 – 3 seconds at min. 2,000 revolutions via the spray probe. If the engine cannot maintain the speed with the intake pipe removed or cannot be started, disconnect the plug from the air flow meter with the ignition switched off. In this case, the stored fault must be deleted from the engine control unit after cleaning using a suitable diagnostic device and the air flow meter must be taught in again if necessary.