Section 14 (Air Injection System): Description
WARNING: This page is about a different car, the 1988 Isuzu I-Mark, 1988 Chevrolet Spectrum, 1987 Isuzu I-Mark, and 1987 Chevrolet Spectrum. However, it is still accessible from the selected car via links, so may be relevant.
The air injection system is designed to reduce CO and HC emission by supplying filtered air through the air induction pipe into the wastegate manifold. This system consists principally of the reed valve, vacuum switching valve, air induction pipe and electronic control module.