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Home >> Honda >> 1979 >> Civic Base, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emissions System - Air Injection System >> Testing >> Choke Switch
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Choke Switch

  1. With engine at idle, pull choke knob out and check that pressure is available at air return hose. If pressure is not present, see TROUBLE SHOOTING  in this article.
  2. Check that pressure is not available when choke knob is pushed in. If pressure is still present with choke knob in, see TROUBLE SHOOTING  in this article.
  3. Remove plug from check valve hose and reconnect. Remove pressure gauge and reconnect return hose to air cleaner.
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