Join Date: Sep 2015
Location: Northern Ireland
County: Co Down
How Smokey Should A DPF Regen Be?
Hi Folks, new to this forum and still figuring out how to search for the correct information I need. So sorry if this question has been asked numerous times before. I have a 2008 159 1.9 Diesel, and this is the first diesel I have had which performs DPF regeneration, which I was completely oblivious to when I bought it (hindsight always seems to have 20/20 vision). I have read several post where people are asking how they can tell if regen is occurring. I wish I was one of these lucky people. I am left with no doubt whatsoever when my car starts a regen cycle, as it seems to put out more smoke and ash than an Icelandic volcano. Is this normal, the manual states you may experience a slight increase in smoke production. Either that is a severe understatement or something is most definitely wrong with my car. From what I can gather from posts everything else appears normal. It doesn't begin until needle hits 90oC on temp gauge, it last for about 10mins or 5-7miles. Sometimes it will happen after 200 miles the longest between regens was about 1000 miles (had long run up motorway during this time). During regen smoke heaviest on acceleration, smoke lightest if I keep revs around 2750-3000rpm (although I live in the countryside, the roads are quite twisty and keeping a constant speed isn't really possible). I have never had a warning light on in relation to DPF. Do you think DPF needs replaced or would flushing with a decarbonising agent help reduce visible smoke?
Sorry I posted this in the newbie section originally by accident, I will remove it if someone can tell me how to do that.