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The carburetor choke closes by using a bimetallic spring or an electric actuator that responds to engine temperature. When the engine is cold, the choke valve is partially closed to restrict airflow, enriching the fuel mixture for easier starting. As the engine warms up, the bimetallic spring or actuator gradually opens the choke valve, allowing more air to mix with the fuel for optimal combustion. This process is crucial for maintaining engine performance during different temperature conditions.

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1mo ago

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