I pulled the turbo today. It’s in pretty good shape. Keep in mind this car has 256K on it.
At first look the vanes only had a light coat of soot which I was able to brush off with a toothbrush.



No visible signs or indications why it would stick open until I dug further.
To open the VNT housing I had to remove 5 small T-25 screws. Breaking the first one was discouraging but I took my time on the rest and soaked them with PB blaster. I had to go back and forth a number of times to prevent them from snapping.
The internal part had thicker carbon deposits that were more crusty.





These parts also cleaned up pretty nice with a small ss wire brush.
However the arm was still sticking. The problem was the soot got into the spot where the shaft goes through the turbine housing. I sprayed the area with PB blaster and worked it in until it soaked through the other side.




Before reassemble, I wiped everything dry and used a torch to burn of any remaining blaster residue. Putting it all together was a bit challenging.I had to put all the parts into the housing first than lower the turbo onto it carefully aligning all the pieces.
Everything moves freely now without binding.
Sorry about hijacking your post, I figured it would be useful to others as I haven’t seen much documentation on cleaning these turbos out. Most of the youtube videos are for VW tdi’s and Ford’s.


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