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 Muffler Rear Exhaust System Insulator for 2003-2008 Dodge Ram 3500 5.7L V8Special Price $8.09 Regular Price $11.99
- 2 pc Walker Muffler Rear Exhaust System Insulators for 1994-1996 Dodge Ram 2500 5.9L L6Special Price $16.44 Regular Price $22.99
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