Mine has just returned from the rather excellent Clive Brooks.
The DPF has been bored out and this could be the cause of it smoking, at a cost of £800 i declined the replacement as it may not be the definite cause of the problem and tbh i can live with it as long as it passes the Emissions test. It had just recently passed the test and i wondered if anyone else with similar empty DPF`s that had any problems come test time. ( I do not know for certain if mine passed the test or they got round it if you know what i mean!).
Volvo cleared the faults on the last visit and it has not thrown up any since, they cannot see anything wrong with the engine although a few repairs that have been do look a bit iffy and it sounds a bit throaty (could that be because it has or hasn`t been re mapped after the removal of the DPF inners? )
At least this has not left me out of pocket,
Thanks to Craig at Clive Brooks
