Air Injection Pump: Description and Operation

Fig. 1 Air Pump With Filter & Pressure Relief Valve:

Fig. 2 Air Pump With Filter:

The air injection pump, Figs. 1 and 2, compresses the air and injects it through the air manifolds, hoses and injection tubes into the exhaust system in the area of the exhaust valves. The fresh air ignites and burns the unburned portion of the exhaust gases in the exhaust system, thus minimizing exhaust contaminations.

NOTE: The air pumps used on 1977-82 vehicles are not serviceable and must be replaced as a unit.