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Home >> Cadillac >> 1985 >> Seville 5.7 N >> Repair and Diagnosis >> Engine Performance >> System >> Diesel CEC System - W/External EGR >> Component Testing >> EPR Valve

EPR Valve

Connect vacuum pump to EPR valve and apply 7 in. Hg. Check that there is no leakage and that valve is open. Apply 12 in. Hg to EPR valve and check that valve is fully closed. Check that valve shaft does not bind in bushings.