Air Injection Systems: Description

Courier models use 2 types of air injection systems. On California models with 2.0L engines, the system consists of an air pump, check valve, air control valve and air injection manifold with 4 injection nozzles. California models with 2.3L engines use the same components except that the air manifold/injection nozzles are replaced with a single air injection pipe.

On Federal models, a special reed valve takes the place of the air pump. It reacts to exhaust system pulsations to draw fresh air into the system. This system consists only of the reed valve (which also acts as a check valve) and injection nozzle.