Kodiak1984

I have a 2011 D13 doing the same thing right now, fills the truck with smoke, fuel knock on cylinder 1, cut the cylinder out all is great, changed all injectors, no change reset overhead, turbo VGT was stuck changed turbo, about 20 seconds after start up n VGT closes it starts to knock, set trim codes and did a cylinder balance reset and the knock went away for a sort time. has anyone found a salution to this issue?