Pulse Air Injection Reactor: Description

NOTE: This article also contains information which is applicable to 1980 Buick Skylark, Chevrolet Citation, Oldsmobile Omega and Pontiac Phoenix models.

The Pulse Air (PAIR) injection system is a non-pump type air injection system which uses engine exhaust pulses to draw fresh air into the exhaust system. This helps to further oxidize HC and CO emissions. System consists of a grouping of check valves in a PAIR valve assembly (2 used on V6 applications) and related tubing.

This system is used on 1977-78 Calif. Chevrolet Chevette models and all 1979 Chevrolet Chevette models and on 1980 Buick Skylark, Chevrolet Citation, Oldsmobile Omega and Pontiac Phoenix models when equipped with L4 engine (exc. Calif.) or V6 engine (all states).