MAZDA Air Injection System (Piston Engines): Description

Mazda Air Injection System consists of an air pump, an anti-afterburn valve, a check valve, an air distribution manifold with a nozzle for each cylinder exhaust port, a vacuum sensing hose, and air supply hoses connecting the system. 1800 models have a separate air cleaner for the air pump, while all other models use the carburetor air cleaner. 616 models also use an air by-pass valve in the air injection system. Other items are also used for emission control as follows:- an air cut valve is used on all models, 1200 & 616 models use a coasting richer device. Dual point distributors are also used on all models except non-California 616 models and California 616 manual transmission models.