Emission controls in older carbureted engines relied on forcing additional air from pumps and valves located just before the exhaust manifold to ensure better burns. This is known as a secondary air injection system, and today has evolved to increase the efficiency of Catalytic Converters. Failed pumps and leaks are common signs of a bad Air Injection System, leading to off air and fuel ratios and poor acceleration. Remember to check the Manifold Gaskets and Seals for wear and tear when examining the exhaust.
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- Walker Converter To Int Pipe Front Exhaust Clamp for 1997-1999 Ford F-250 4.6L 5.4L V8Special Price $4.23 Regular Price $5.99
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- Walker Converter To Int Pipe Front Exhaust Clamp for 1987-1995 Ford F-250 4.9L 5.0L L6 V8Special Price $3.99 Regular Price $5.99
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