EGR Valve Cleaning
WARNING: Appropriate eye protection should be worn when cleaning the EGR system to prevent injury to eyes.CAUTION: DO NOT wash the EGR valve in solvents or degreaser as permanent damage to the valve diaphragm may result. Also, sand blasting of the valve is not recommended since this can affect the operation of the valve.
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 build up with a screwdriver.
3. Clean the mounting surfaces of the intake manifold and valve assembly.
4. Install valve assembly using new gasket.