Air Suction System

Inspect vacuum tubes for damage. Replace as needed. Start engine and hold a piece of thin paper against filter inlet port. System is operating properly if paper is held against opening.
If paper is not held against filter port, remove filter using Wrench (SST 09228-44010). Repeat air suction system test at air suction valve. If paper is held against air suction valve, replace filter. If paper still is not held against opening, replace air suction valve.

Fig 1: 1978-79 Corolla 1600 (Federal 2T-C Engine) Air Suction System
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