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The pipe that runs from the exhaust manifold to the air cleaner intake is commonly referred to as the exhaust heat riser or heat stove pipe. Its purpose is to channel warm air from the exhaust manifold to the air cleaner, aiding in the vaporization of fuel in cold weather to improve engine performance during startup. This system helps prevent carburetor icing and ensures smoother engine operation in low-temperature conditions.

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1w ago

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