DPF ash at 80% - local garage says they can clean on-car
DPF ash at 80% - local garage says they can clean on-car
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MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (09:09)
quotequote all
So I had researched a fair bit about DPF cleaning and pretty much everything was saying to get rid of the ash it's an off-car job (£300-£500). Local garage reckons they can clean out the ash without removing it from the car for much less. Does anyone have any experience when it comes to clearing out the ash residue either on or off-car?

Decky_Q

2,025 posts

203 months

Yesterday (09:50)
quotequote all
I've done it on car and off car.

On-car you feed the cleaning solution in through the front pressure sensor pipe, let it soak a while and start the car, theres tons of steam out the tailpipe and the dpf is at least partially cleared so the engine can breathe again.

Off-car is much more thorough, dpf is soaked in a tank of cleaner and then pressure cleaned, both sides and rinsed many times with virtually all ash removed. Extra cost will be rusty exhaust bolts, much more fluid used, more time taken, and disposal of the carcinogenic soup.


You can do the on-car method yourself, the front pipe is just a rubber pipe with a spring clip. The cleaners usually have a hose to connect here, then pump it in.

Edited by Decky_Q on Wednesday 3rd June 09:54

J4CKO

46,308 posts

226 months

Yesterday (10:12)
quotequote all
If its truly at 80 percent and its ash, not soot, that needs chemical cleaning in a bath and blasting through backwards.

What car ?


mwstewart

8,432 posts

214 months

Yesterday (10:16)
quotequote all
If you keep the car then check that you're using the correct oil.

ashenfie

2,643 posts

72 months

Yesterday (10:17)
quotequote all
These guy have a huge number of vid's about cleaning DPFs and very rarely take the DPF off.

https://www.youtube.com/@ORileysAutos

MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (14:35)
quotequote all
Thanks, much appreciated!





Decky_Q said:
I've done it on car and off car.

On-car you feed the cleaning solution in through the front pressure sensor pipe, let it soak a while and start the car, theres tons of steam out the tailpipe and the dpf is at least partially cleared so the engine can breathe again.

Off-car is much more thorough, dpf is soaked in a tank of cleaner and then pressure cleaned, both sides and rinsed many times with virtually all ash removed. Extra cost will be rusty exhaust bolts, much more fluid used, more time taken, and disposal of the carcinogenic soup.


You can do the on-car method yourself, the front pipe is just a rubber pipe with a spring clip. The cleaners usually have a hose to connect here, then pump it in.

Edited by Decky_Q on Wednesday 3rd June 09:54

MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (14:36)
quotequote all
Cheers, yes it's definitely ash, I've got a good DPF app linked to an ODB reader.



J4CKO said:
If its truly at 80 percent and its ash, not soot, that needs chemical cleaning in a bath and blasting through backwards.

What car ?

MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (14:37)
quotequote all
Forgot to say, it's a 2016 Golf GTD with 150,000 miles on it now



J4CKO said:
If its truly at 80 percent and its ash, not soot, that needs chemical cleaning in a bath and blasting through backwards.

What car ?

MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (14:38)
quotequote all
Thanks, yep always use the proper VW approved spec for the car

mwstewart said:
If you keep the car then check that you're using the correct oil.

MonkeyMalloo

Original Poster:

21 posts

79 months

Yesterday (14:38)
quotequote all
Great thanks for that!



ashenfie said:
These guy have a huge number of vid's about cleaning DPFs and very rarely take the DPF off.

https://www.youtube.com/@ORileysAutos