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Home >> Toyota >> 1981 >> Pickup 3/4 Ton >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Air Injection System >> Testing >> Preliminary Test >> All Models

All Models

Check all hoses and connections. With engine coolant below 45°F (8°C), remove air by-pass hose from air cleaner housing. Start engine. Air should discharge from air by-pass hose. As engine warms up, air by-pass should stop. Leave hose disconnected and proceed with system check.