LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 1980 >> Skyhawk Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Gas RECIRCULATION (EGR) System >> Maintenance >> EGR Valve Cleaning

EGR Valve Cleaning

CAUTION: Do not wash valve assembly in solvents or degreaser, permanent damage to valve diaphragm may result. Also, sand blasting of the valve is not recommended since this can affect the operation of the valve.
  1. Remove EGR valve and discard gasket. Hold valve assembly in hand, then tap lightly on the sides and end of valve, and on the pintle itself using a plastic hammer to remove the exhaust deposits from the valve. Empty loose particles.
    NOTE: DO NOT place EGR valve in a vise.
  2. With a wire wheel, buff the exhaust deposits from mounting surface and around valve. Depress valve diaphragm and look at valve seating area through valve outlet to ensure it is clean.
  3. Inspect for exhaust deposits in valve outlet. Remove deposit build up with a screwdriver.
  4. Clean mounting surfaces of intake manifold and valve assembly, then using a new gasket, install valve assembly on intake manifold. Tighten attaching bolts and connect vacuum hose.
scientia non olet · About LEMON Manuals