Air Injection System: Description
The air injection system is designed to reduce hydrocarbons (HC) and carbon monoxide (CO) emissions by injecting air into the exhaust manifold(s) or catalytic converter.
A belt driven air pump injects air into the exhaust port of cylinder head, exhaust manifold or catalytic converter. The air injection system operates at all times and will by-pass air during rich operation, deceleration, cold engine operation or high RPMs.
There are 4 different air injection system valves used to direct proper air flow. A check valve protects the air pump from damage by preventing a backflow of exhaust gases.