As title. I suspect that there is a tiny leak from this on our car. When I serviced it last November, I did notice that there was a sign of a possible problem ie a slight trace of soot around the rear of the woven SS covering.
As previously reported, I have blanked off the EGR after cleaning out the manifold (last year, prior to our last trip out with the caravan) The performance has been really good since this, and currently there is no coolant or oil loss. However, I have been aware of the need to carry out what I term as a "DPF clean" run down the good old A34 (my lad obliges frequently when he borrows the car to go to work lol) a bit more frequently than I used to. He reported about a week ago that there was occasionally some smoke from the front end and this would clear. I experienced it today; on the Oxford ring road during a shopping trip, when pulling up at some lights out from under the front came a white cloud of smoke accompanied by a very strong diesel smell. We got round to the shop and parked up. Checking under the bonnet, I noticed some wetness on the top of the breather canister, which I mistook for diesel (by now the smoking had stopped - it turned out to be a bit of oil mist) and being wary of possible fire I called the AA and out came a nice guy with a powerful torch. Absolutely no signs of leakage at any of the many pipes and connectors and so he kindly followed us home and checked it again. I am of the opinion that a regen had started and the extra diesel generously provided by the ECU had caused the smoking from the flexi part of the downpipe. The remainder of running today produced no further problems.
So tomorrow off will come the undertray, and over the following few days I will be armed with my bright torch and a blanket to quickly lay on at the side of the car if/when we get more smoke to confirm (or not) that the smoke is coming from the suspected flexi.
Anyone else had a similar problem?
Notwithstanding the relative low cost of a downpipe (if this is indeed the culprit) OH has now lost confidence in the car and we are looking for likely replacements.