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Home >> Mercedes Benz >> 1981 >> 300SD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION >> Operation >> EGR Valve
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EGR Valve

The EGR valve is operated by a vacuum signal. The valve controls the amount of EGR depending upon the strength of the vacuum control signal. A corrugated tube from the exhaust manifold provides exhaust gases to the EGR valve, located on the intake manifold.