Turbine wheel inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Remove the joint pipe. (See TURBOCHARGER REMOVAL/INSTALLATION (BP WITH TC) .)
Visually inspect the turbine wheel from view B for the cracks, damage, or bending on all the turbine wheel blades.

Fig 1: Inspecting Turbine Wheel From View Cracks, Damage, Or Bending On All Turbine Wheel Blades
Courtesy of MAZDA MOTORS CORP.
- If there are cracks, damage, or bending on the turbine wheel, replace the turbocharger.
  NOTE:
  - It is easier to inspect the compressor wheel by inserting a mirror at the position shown in Fig 1 and illuminating the area using a pen light.
  - If there is contact between the turbine wheel and turbine housing, there may be cracks, damage, or bending on the blade end area.
  - If there are cracks, damage, or bending on the turbine wheel, verify the following after replacing the turbocharger.
    
    Intake air/exhaust system related components
    
    Oil pipe damage