Compressor Air Intake Turbocharger Cleaning and Inspection
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Completely inspect the turbocharger and all other engine components that may cause similar conditions before replacing the turbocharger. Use the following information to diagnose problems. The turbocharger is serviced as a complete unit.
- NOTE:
Oil residue on the turbocharger compressor wheel is normal with a closed PCV system.
Clean the turbocharger mating surfaces (1, 2).
Inspect for damage to the compressor wheel, compared to a normal compressor wheel.
Inspect for damage to the compressor wheel, by a soft object.
Inspect for damage to the compressor wheel, by a hard object.
Inspect compressor blades for heavy rubbing.
- Ensure that the following conditions do not exist on the compressor wheel blades:
- Cracks
- Bends
- Erosion of the blades
- Broken blades
- Check the housing for signs of rubbing.
- Clean the turbocharger inlet duct.
- Clean the turbocharger inlet duct mating surfaces.
- Inspect the turbocharger inlet duct for cracks.
- Inspect the turbocharger inlet duct mating surfaces for damage.