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Home >> Chevrolet >> 1985 >> Impala 5.7 N, 200C/MV9 >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection Reactor System >> Operation >> Check Valve
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Check Valve

Check valve prevents backflow of exhaust gases into Air Injection system. Check valve prevents backflow when air pump by-passes at high speeds, extreme engine loads, or in case of air pump malfunctions.