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 Int Pipe Exhaust System Insulator for 2007-2012 Lincoln MKZ 2.5L 3.5L L4 V6Special Price $7.76 Regular Price $10.99
- Walker Int Pipe Exhaust System Insulator for 2011-2018 Ram 1500 5.7L V8Special Price $7.76 Regular Price $10.99