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Home >> Mercedes Benz >> 1987 >> 300D >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Component Operation >> Vacuum Control Valve
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Vacuum Control Valve

The vacuum control valve is attached to the injection pump and connected to the control lever by a linkage. With supply vacuum applied and increasing with load, this valve keeps the modulating pressure at a constant value. This modulating pressure is then processed by the vacuum amplifier.