C30 DPF fitment - Page 2

Dancake · Jun 22nd, 2020, 23:26

Exhaust gases pass through the channels in dpf's in two ways. Either straight through the 'open' channels, or out the side of the 'closed' channels at 90° via small holes in those channels. The problems start when the ash blocks the small holes in the closed channels, eventually leading to increased back pressure and dpf warning lights.

For a long time I was also of the opinion that cleaning dpf's was a false economy. That was until I actually cleaned a couple myself. To cut a long story short, it is entirely possible to clean dpf's to the point where they will function almost as good as new (proven by measuring pressures before and after cleaning and comparing to OEM specs). If you have the time, enthusiasm and available equipment, it's worth a try.

Baal · Jun 23rd, 2020, 06:29

Ok, maybe FAP filters had 90° angles in there I don't know because I never dealt with any of them, but not on 1800 Bar common-rail systems which are default these days. That would restrict exhaust gasses way too much.

Exactly my man. People are jumping to conclusion that cleaning these filters is a scam/false economy without ever cleaning any of them. I've single handedly cleaned a lot of them and I can safely say that it works.

KiethsV50 · Mar 4th, 2021, 14:46

Thanks for the info everyone, it is actually my sons car and he decided to have a regen done on it, despite your/my advice.
Turns out he had several done, and didn't tell me about all of them. When he bought the car I commented that it smelt like it was running rich/not burning all the diesel and needed looking at but he is 19 and knows better than me and my 25 years engineering experience building gas turbines obvs!
Thanks to a crimper puckering experience of it running away on the way to work, he now has it in a garage being repaired. injectors sent away for testing and declared scrap with a comment that one seemed to have been stuck open for some time.....(no surprise to me there)
So new injectors, new turbo, enforced furlough because he can't get to work.
Hopefully he has learnt a (very expensive) lesson.
So I guess the moral of this story is if your DPF keeps clogging, take a deep breath, grab hold of your "valuables" and get the injectors tested or pay twice that down the road...if it doesn't catch fire!!

Jun 22nd, 2020, 23:26	#11
Dancake Premier Member Last Online: Today 12:45 Join Date: Apr 2011 Location: Belfast	Exhaust gases pass through the channels in dpf's in two ways. Either straight through the 'open' channels, or out the side of the 'closed' channels at 90° via small holes in those channels. The problems start when the ash blocks the small holes in the closed channels, eventually leading to increased back pressure and dpf warning lights. For a long time I was also of the opinion that cleaning dpf's was a false economy. That was until I actually cleaned a couple myself. To cut a long story short, it is entirely possible to clean dpf's to the point where they will function almost as good as new (proven by measuring pressures before and after cleaning and comparing to OEM specs). If you have the time, enthusiasm and available equipment, it's worth a try. __________________ 1996 850 T5 - Sold 2003 S40 1.9d - Sold 2004 S60 D5

Mar 4th, 2021, 14:46	#13
KiethsV50 New Member Last Online: Mar 12th, 2021 09:50 Join Date: Dec 2013 Location: Norwich	Update Thanks for the info everyone, it is actually my sons car and he decided to have a regen done on it, despite your/my advice. Turns out he had several done, and didn't tell me about all of them. When he bought the car I commented that it smelt like it was running rich/not burning all the diesel and needed looking at but he is 19 and knows better than me and my 25 years engineering experience building gas turbines obvs! Thanks to a crimper puckering experience of it running away on the way to work, he now has it in a garage being repaired. injectors sent away for testing and declared scrap with a comment that one seemed to have been stuck open for some time.....(no surprise to me there) So new injectors, new turbo, enforced furlough because he can't get to work. Hopefully he has learnt a (very expensive) lesson. So I guess the moral of this story is if your DPF keeps clogging, take a deep breath, grab hold of your "valuables" and get the injectors tested or pay twice that down the road...if it doesn't catch fire!!

Jun 23rd, 2020, 06:29	#12
Baal Member Last Online: Jul 4th, 2022 15:18 Join Date: May 2020 Location: Ljubljana	Ok, maybe FAP filters had 90° angles in there I don't know because I never dealt with any of them, but not on 1800 Bar common-rail systems which are default these days. That would restrict exhaust gasses way too much. Exactly my man. People are jumping to conclusion that cleaning these filters is a scam/false economy without ever cleaning any of them. I've single handedly cleaned a lot of them and I can safely say that it works.

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