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Home >> Mercedes Benz >> 1986 >> 300SDL >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Diesel >> Operation >> RECIRCULATION Air Control

RECIRCULATION Air Control

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Air recirculating valve is opened or closed depending on input signal to EDS control unit to improve burn-up conditions in trap oxidizer. When air recirculating valve closes, vacuum of 30 Bar remains on valve. Air recirculating valve opens when engine speed is between 1200-3600 RPM and fuel rack load is less than .35" (9 mm).