Air Flow Meter

Air flow meter measures the quantity of intake air, and sends a signal to the control unit. The air flow meter is provided with a flap in the air passage. During idling operation when the amount of intake air is small, air flows parallel to the flap through the by-pass port so that the correct intake air flow can be provided.

An air temperature sensor is installed in the passage. The by-pass port has the air by-pass screw which regulates idle mixture ratio. The air by-pass screw is set and sealed at the factory.