Smog/Air Pump

Air pump Used to pump extra air into the exhaust system to help the converter re-burn pollutants. Most of the earlier vehicles will run without air pump, but manufactures are forced to use them in some cases to meet emissions laws.

Smog pump is a belt-driven or electric motor pump device designed to force outside air into the exhaust ports. The outside air will supply oxygen to stimulate the continued burning of hot excess fuel and gases leaving through the exhaust valves and passing into the exhaust manifold.

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