Also check your EGR isn’t jammed open, that’ll cause black smoke. I blanked mine off and it’s drastically reduced the smoking. The EGR isn’t great on the 2d and they fail. Gritty oil deposits in the inlet manifold is normal on the 2d so don’t panic yet. If you’ve got the single inlet butterfly valve it’s worth giving it a clean and chamfer off the edges of the butterfly valve to stop it sticking, another known but silly issue.
TT
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 Never underestimate the power of stupid. It’ can’t be reasoned or negotiated with and you’ll never never beat it…. Cut your losses, smile and walk away
Currently Volvoless but Thong will be back
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