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Home >> Jeep >> 1985 >> CJ7 Base, 4.2 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Testing >> Check Valve Test

Check Valve Test

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To check operation of this valve, remove air supply hose from pump at distribution manifold. With engine operating, listen for exhaust leakage at check valve, which is connected to distribution manifold.