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Home >> Mercedes Benz >> 1981 >> 300CD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION >> Testing >> EGR Valve

EGR Valve

Start engine. With engine at idle, eliminate slack in free travel rod by pulling with hand. Disconnect and connect vacuum line at EGR valve and listen for valve operation. If valve does not operate, replace it.