Spirit L6-258 4.2L VIN C 2-bbl (1982)
Air Injection Manifold: Description and Operation
OPERATION
The air delivery manifold distributes the air from the pump to each of the air delivery tubes in a uniform manner. A check valve which is an
integral part of the air delivery manifold prevents the reverse flow of exhaust gases into the pump should the pump fail or the exhaust gas pressures
exceed pump output.