Pulse Air Injection System: Description

The pulse air injection system is used to inject fresh air into the exhaust system. When fresh air is injected into the hot exhaust gasses, combustion takes place. This reduces the amount of unburned fuel that escapes to the atmosphere.

The system consists of check valves, control valves, control valve solenoids, a vacuum reservoir, vacuum lines and air lines. The pulse air system is capable of injecting air at both the catalytic converter (downstream) or the front exhaust pipe.