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Fig. 58: View Of Fuel Injector Nozzle Tip & Copper Washer Sealing Area 1. Use a soft bristle non-metallic brush and top engine cleaner, GM P/N 1052626 or equivalent, to remove any deposits from the nozzle tip (1) and the copper washer sealing
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2. Inspect the fuel injector nozzle tip (1) for cracks, dents, or other damage. 3. Inspect the nozzle tip (1) for any signs of discoloration - dark yellow, tan, or blue due to excessive heat. 4. Replace the injector if any damage is found. Fig. 59: View Of Fuel Injector Sealing Surfaces 5. Clean the fuel injector high pressure line. 6. Inspect the fuel injector high pressure line for excessive corrosion or damage to the sealing surfaces (1, 2). Replace the line if any damage is found. TURBOCHARGER CLEANING AND INSPECTION Completely inspect the turbocharger and all other engine components that may cause similar NOTE: The fuel injector must be cleaned with the proper cleaning
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
conditions before replacing the turbocharger. Use the following information to diagnose problems caused by the turbocharger. The turbocharger is serviced as a complete unit. Fig. 60: View Of Oil Return Pipe Bolts
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
1. Remove the turbocharger oil return pipe bolts. 2. Remove the turbocharger oil return pipe and gasket. 3. Clean mating surfaces. Fig. 61: View Of Compressor Wheel IMPORTANT: Oil residue on the turbocharger compressor wheel is normal with a closed PCV system.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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