I have an E46 330Cd which as my first convertible has been a real joy. It has 123k miles on the clock. Normally the exhaust is fine but if I choose to accelerate hard then the engine emits quite a lot of exhaust fumes of a dark colour.
I read the smoking diesel guide but not being particularly technical, I was not able to see a connection betwen the smoking causes suggested and what I see from my car. If you could give any guidance as to whether this is a serious issue or is it wear and tear due to age? What can I do to confirm the issue?
Thank you for any guidance you can give.