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Home >> Plymouth >> 1989 >> Colt E >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (System/Component Tests - CARBURETED) >> Emission Systems & Sub-Systems >> Air Injection >> System Test

System Test

WARNING: This page is about a different car, the 1989 Dodge Ram 50 and 1989 Dodge Raider. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect air supply hose from air cleaner and hold a small flat metal plate at hose end to check for suction. Start engine. Let Idle. With coolant temperature at 68-104°F (20-40°C), suction should be felt.
  2. Run engine until coolant temperature is 158°F (70°C) or higher. Turn ignition off. Restart engine. Let idle. There should be suction for up to 70 seconds, after which there should be none.
  3. Bring engine to 4000 RPM and decelerate rapidly. Suction should be felt.
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