Black smoke from a 307 diesel?

My wife has a 2005 Peugeot 307 1.6 HDI that has a diesel knock and blows black smoke on starting. It gets worse then better, occasionally running well then starting to smoke again.

Asked on 29 April 2014 by steve307

Answered by Honest John
Turbo oil seal failure, valve stem seal failure or a failed injector.
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