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Home >> Oldsmobile >> 1985 >> Firenza Base, 2.0 P, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection Reactor System >> Operation >> Check Valve

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.