K 2500 Truck 4WD V6-262 4.3L (1988)
EGR Valve: Testing and Inspection
CAUTION: Do Not wash any EGR valve in solvents or degreaser, as permanent damage may result, Also, sand blasting of the valve is not
recommended, since this can affect the operation of the valve.
Wear approved eye protection for this cleaning procedure, to avoid possible injury to the eyes.
Use the following cleaning instructions for all EGR valves except the digital EGR valve used on VIN C 3800 engines.
1.
With a wire wheel, buff the exhaust deposits from the mounting surface and around the valve.
2.
Look for exhaust deposits in the valve outlet. Remove deposit buildup with a screwdriver.
3.
Clean mounting surfaces of intake manifold and valve assembly.
4.
Install valve assembly using new gasket.
