Is smoke normal on a DPF re-gen

[R W]

My recently acquired 2007 V6 320cdi fitted with a DPF has on two occasions omitted clouds of blue/white smoke. First time I immediately stopped it & the smoke smelt acidic/toxic, not the smell of fuel or oil. Restarted it & it was fine. Its covered 1400kms since the first smoke secession & yesterday it did the same thing again. This time I didn’t stop it, it ran for maybe 1 or 2 kms & the smoke cleared, it then drove 400kms no trouble at all, running perfect.

I had the fault codes read last week & it showed two error codes 2043-002 & 2616-002 but none active. If anyone could advise what these are & if they are relivent to my problem.

My question is , can or does a DPF re-gen cause a plume of blue smoke, or do I have a problem. I know very little about DPF re-gen but searching the forum I don’t see anyone talking about smoke like I have.

Any advice would be appreciated,

 

[Dieselman]

vast quantities of smoke is normal for DPF regen...which begs the question, just how are they reducing particulate emissions?

 

[R W]

Thanks Dieselman for the reasurance that the smoke is normal.It was worrying the first time it did it.
I agree, the amount of smoke omitted makes you wonder how much these devices lower emissions

 

[flango]

None of the DPF regens on my Volvos or Audi have ever produced smoke and both alert you when they are in regen mode is the MB regen process different ?

Edit: just realised volvo injects eolys fluid to lower combustion temp of soot particles and reduce or eliminate smoke during regen