you have the i6 engine. I think your CCV is toast - the white smoke is usually the tell-tale sign of a CCV going downhill on these engines. The next thing is the VCG will rupture, and you will have oil leaks around it (best case scenario). Worst case is oil ingestion in the engine with hydrolocking it.

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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.