Hi I have a 2005 Fiat Carioca 2.3 she drives like a dream but when slowing down after the vehicle has warmed up the van belches out bluey white smoke. It lasts for possibly 20 seconds disappears then appears again when slowing down. It is embarrasing to say the least and I find myself holding back from accelerating to quick trying to release the smoke slowly. I have seen posts on this before but have not seen any confirmed remedies. Can any of you assist.

Sticky egr or throttle body is my guess see how it is with the air mass disconnected