Turbo whisling

[Streachy]

(11-21-2016 )Dcolumbia Wrote:  Had an actuator code, 2387 I think, when I took of the actuator the VG lever wouldn't budge. Obviously carbon build up on VG face and vanes. I had the used one that I purchased on e bay and being Sunday afternoon, no parts store open, I put it on to run the next 3 days. Now I have a whistle sound when boosting that gets louder with boost pressure. I believe it to be an exhaust leak where the turbo mounts since I had to reuse the gasket. Is this a possibility? Runs fine, better than with the old turbo, and I checked all the CAC hoses. No codes now. So will an exhaust leak at the turbo, the egr, or the exhaust pipe behind the turbo cause this whistling noise?

Had an exhaust gasket go on mine. Really squealed when the Turbo actuator would move into a place where it would create a back pressure. I think it's starting to go again already. A mechanic buddy of mine was replacing a gasket set on another truck and when I told him of my situation he said that they found that they had to do a little grinding on some of the manifolds to get them to seal properly.