K 1500 Truck 4WD V6-262 4.3L VIN Z (1992)
EGR Valve: Service and Repair
EGR Valve Replacement
EGR Valve
REMOVAL:
1.
Remove the air cleaner.
2.
Remove the EGR valve vacuum tube at valve.
3.
Remove the bolts or nuts.
4.
Remove the EGR valve and gasket from manifold. Discard gasket.
INSPECTION:
If the EGR passage indicates excessive build up of deposits, the passage should be cleaned. Care should be taken to ensure that all loose particles are
completely removed to prevent them from clogging the EGR valve of from being ingested into the engine.
CLEANING:
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.
INSTALLATION:
1.
Install a new EGR gasket.
2.
Install EGR valve onto manifold.
3.
Install bolts or nuts.
4.
Connect vacuum tube to EGR valve.
5.
Install air cleaner assembly.
6.
Check operation of EGR system to ensure correct operation.
