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Old 15-01-2020, 09:49 PM   #31
bidderman1969
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Quote:
Originally Posted by Caledoniandream View Post
Anything after 2015 would probably comply with the ULEZ, but check before you buy.
I think you struggle to find anything more reliable than Kia, Hyundai, Lexus or Toyota.
DPF for most engines is approx 1200 pound, the added cost will be how much work it is, on the the Ford Kuga for example you need to drop the sub-frame, what as a few hours = labour cost.
DPF wear out, people clean them but you cannot refurbish them.
Be careful with cleaned DPF, there are talks to replace the smoke test (MOT) with a different test.
The new test will measure ďparticulate countĒ instead of the current ďopacity measurement ď
This will catch any modifications, worn or damaged DPF in one simple measurement.
Electrical faults are the main reason of breakdowns, and cost the most to put right.
Surely a cleaned DPF will be like new???
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Old 15-01-2020, 10:22 PM   #32
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Originally Posted by bidderman1969 View Post
Surely a cleaned DPF will be like new???
I wish, they maybe improve, but they wear.
A DPF is a disposable part, life expectancy between 70 and 120k
You can cut them open for cleaning (mot failure) so itís a chemical that needs to clean it by either submersion or backflush.
As the filter is so fine itís virtual impossible to clean it 100%.
And like exhausts they donít only corrode from the outside in, the temperature and flow of chemicals, hot gasses etc has a detrimental affect on its inner.
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Old 15-01-2020, 10:32 PM   #33
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You need to remove the driveshaft to get the DPF out of a Passat .... cleaning is a waste of time, you can cut them open but you need to prove to the test station why (sometimes a letter will do)
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Old 15-01-2020, 11:26 PM   #34
bidderman1969
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Quote:
Originally Posted by Caledoniandream View Post
I wish, they maybe improve, but they wear.
A DPF is a disposable part, life expectancy between 70 and 120k
You can cut them open for cleaning (mot failure) so itís a chemical that needs to clean it by either submersion or backflush.
As the filter is so fine itís virtual impossible to clean it 100%.
And like exhausts they donít only corrode from the outside in, the temperature and flow of chemicals, hot gasses etc has a detrimental affect on its inner.
Mine must be fubered then
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Old 16-01-2020, 06:55 PM   #35
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Blocked DPF?

Nothing a masonry drill bit won't sort...

Some DPFs are designed to be removed and taken for service exchange, I presume they clean them out somehow. I think a genuine Volvo one (including the pikka downpipe and piece of exhaust that houses it) is about £200 so not mental money.
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Old 16-01-2020, 08:19 PM   #36
chris182
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Originally Posted by bidderman1969 View Post
true, but ive found while researching, that some are just more troublesome than others, maybe wrong, but that's just what i seemed to find
My only experience of DPF warning lights was on a Passat.

Did the exact same journey I did in the Jag (35 miles of M/Way driving 4 times a week) and before I got rid was constantly getting the warning light coming on. Never a problem with the Jag. It was the VW 2.0l 170bhp version.
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Old 17-01-2020, 04:42 PM   #37
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Quote:
Originally Posted by Caledoniandream View Post
I wish, they maybe improve, but they wear.
A DPF is a disposable part, life expectancy between 70 and 120k
You can cut them open for cleaning (mot failure) so itís a chemical that needs to clean it by either submersion or backflush.
As the filter is so fine itís virtual impossible to clean it 100%.
And like exhausts they donít only corrode from the outside in, the temperature and flow of chemicals, hot gasses etc has a detrimental affect on its inner.
well, i was thinking of getting my DPF cleaning like this

https://www.copthornemotorcompany.co.uk/dpf-cleaning/
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