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Home >> Isuzu >> 1982 >> Pickup 2.2L Eng VIN S, 4WD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Air Injection System >> Operation >> Air Pump
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Air Pump

Air pump is belt driven. It draws fresh air in, pressurizes it and passes it along to the rest of the system. A built-in relief valve will bleed off any excess pressure occurring in the air pump. Normal air pump pressure is 2.8-4.9 psi.