Got my DPF cleaned out

Author
Discussion

shoehorn

686 posts

144 months

Thursday 7th August 2014
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rigga said:
Not true unfortunately, modern direct injection engines coke up badly, especially around the inlet valves as being direct injection no fuel with special cleaning agents goes anywhere near them.
Still not sold on the terraclean system.
Yes, most of the inlet ports and manifolds I have removed or seen have been clogged right up to and including the throttle body,some to the point of wondering how the thing actually got going!

rickbrown74

250 posts

243 months

Thursday 7th August 2014
quotequote all
I had a Zafira about 4 years ago that had the DPF light coming on. Brought it to a local mechanic who took it to Hursts Belfast (main dealer) to sort. They 'cleaned' the DPF and charged £200. No DPF light and all seemed well.

I sold the car 4 days later - got a call from the guy saying that the car went into some sort of limp mode on his way home. He got his mate to put it on computer and it showed that the DPF was completely blocked. I ended up giving him £1000 to sort it and vowed never to buy from Hursts for fobbing us off in such a way.

nicanary

9,798 posts

147 months

Thursday 7th August 2014
quotequote all
rickbrown74 said:
I had a Zafira about 4 years ago that had the DPF light coming on. Brought it to a local mechanic who took it to Hursts Belfast (main dealer) to sort. They 'cleaned' the DPF and charged £200. No DPF light and all seemed well.

I sold the car 4 days later - got a call from the guy saying that the car went into some sort of limp mode on his way home. He got his mate to put it on computer and it showed that the DPF was completely blocked. I ended up giving him £1000 to sort it and vowed never to buy from Hursts for fobbing us off in such a way.
They probably got someone to drive it up the motorway at 5k revs in 3rd for a couple of miles, just to get the light to go out. £200 easy money.

This regeneration thing irritates me - when it was just a light coming on you could clear it easily enough with the "blast" I mentioned above. The regen system means you have no control over what happens - it burns the DPF when it deems necessary, and quite honestly the smell and the noise p***es me off. It's done it on my car after a 20 mile run at 60mph cruisiong - quite how that qualifies as "low speed town work" I don't know.I assume that it just regens automatically every few hundred miles or something like that. Annoying.

Triumph Man

8,699 posts

169 months

Thursday 7th August 2014
quotequote all
shoehorn said:
H100S said:
This is nonsense, dealers use DPF cleaning equipment frequently.
Certainly,it was a service manager from a large dealer network that told me about the brick acid trick a few years back!

I had heard tale,from 2 different sources of a *dealer drilling a one inch hole through them with a masonary/sds drill bit and then refitting them regularly for warranty jobs on their cars fitted with the PSA DV6 engine.
Apparently that is the perfect amount for it to register as good but still retain/send the right sort of data to the ecu,alarming really.
  • Cant name and shame but think Michael Caine and gold bars.
Austin?
Bedford?
Fiat?

If the last one, I didn't think they used the PSA Diesel V6 engine...

Monty Python

4,812 posts

198 months

Thursday 7th August 2014
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I've just read some of the Q&As, the best being:

Q. Is TerraClean any better than the pour-in I have been using for years ?

A. Yes. TerraClean is unique in the system of cleaning. It is not just about the chemistry, it uses patented technology. TerraClean cleans from Injectors through the combustion process and cleans post combustion too. Thus cleaning EGR & Diesel Particulate Filters.

..as if being patented makes is somehow superior.

TheEnd

15,370 posts

189 months

Thursday 7th August 2014
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Thus cleaning EGR & Diesel Particulate Filters.citation needed


When you are over a barrel with an expensive repair looming, everyone will try a £8 bottle of snake oil as a gamble.
If it works, great, if it doesn't, it's only a few quid.

Great news for the additive manufacturers selling stuff like cracked block repair stuff, stop leak oil additives and cleaners, because people half expect them not to work, and might even be stupid enough to buy another bottle just to be sure.


shoehorn

686 posts

144 months

Thursday 7th August 2014
quotequote all
Triumph Man said:
Austin?
Bedford?
Fiat?

If the last one, I didn't think they used the PSA Diesel V6 engine...
PSA DV6 is a 1.6 four cylinder diesel engine fitted to MINIS,peugeots,fords,citroens,volvos, etc.

Busa mav

2,562 posts

155 months

Thursday 7th August 2014
quotequote all
I have a DPF problem with my Volvo V70 D5.

It has been to the garage 3 times now , run a forced regen first time , then a sensor , then some magic potion and a forced regen.

Still getting soot filter full messages and limp mode

Car gets driven hard and on long journeys.

Now told it needs a new DPF , cost including oil and filter change is £ 830 at Volvo main dealer.

OR

Local garage will cut into the filter , remove the guts and then program the ecu for £ 500 , guaranteeing better performance and fuel consumption.

Any thoughts on what way to go ?

jamieduff1981

8,025 posts

141 months

Thursday 7th August 2014
quotequote all
To those who do this professionally - aren't there regulations in place to prevent the purpose of a DPF being somewhat compromised if in offering a chemical cleaning process the car produces large clouds of pollutants?

Surely replacement would be the only legal solution, or cleaning whereby the particulates were recovered rather than blowing them out in to the atmosphere?

Mr Whippy

29,055 posts

242 months

Thursday 7th August 2014
quotequote all
And to think these are meant to make cars net cleaner over their lifetime.

Clouds of black smoke, chemical cleaning, hundreds of litres of polluted water to clean, brick cleaner, inefficient operating when they are not running, de-activations. Yadda yadda.

Imo these systems should have warranties that last 50 years enforced by the same EU laws that put them there, then we might see manufacturers putting some effort into them...

Monty Python

4,812 posts

198 months

Thursday 7th August 2014
quotequote all
Mr Whippy said:
And to think these are meant to make cars net cleaner over their lifetime.

Clouds of black smoke, chemical cleaning, hundreds of litres of polluted water to clean, brick cleaner, inefficient operating when they are not running, de-activations. Yadda yadda.

Imo these systems should have warranties that last 50 years enforced by the same EU laws that put them there, then we might see manufacturers putting some effort into them...
They do if the car isn't driven as it's meant to be - who's ever been asked by a salesman how many miles a year they cover before when buying I diesel - I certainly haven't. They probably take the view that by the time the DPF problem rears it's head the car will be out of any sort of warranty, so they won't have to fix it.

Edited by Monty Python on Thursday 7th August 15:41

delboy735

1,656 posts

203 months

Thursday 7th August 2014
quotequote all
I'm going to sound really stupid now.....and not for the first time, how do you know if your car actually has DPF. I know mine has an EGR valve, that is becoming blocked up again, but don't know about a DPF. How do I find out ?

Mr Whippy

29,055 posts

242 months

Thursday 7th August 2014
quotequote all
Monty Python said:
Mr Whippy said:
And to think these are meant to make cars net cleaner over their lifetime.

Clouds of black smoke, chemical cleaning, hundreds of litres of polluted water to clean, brick cleaner, inefficient operating when they are not running, de-activations. Yadda yadda.

Imo these systems should have warranties that last 50 years enforced by the same EU laws that put them there, then we might see manufacturers putting some effort into them...
They do if the car is driven as it's meant to be - who's ever been asked by a salesman how many miles a year they cover before when buying I diesel - I certainly haven't. They probably take the view that by the time the DPF problem rears it's head the car will be out of any sort of warranty, so they won't have to fix it.
But they're not driven how they are meant to be.

In any case I'm struggling to see if there is a net environmental gain by having DPF.

If the gain is marginal overall, not better to spend that cash on things that then have a better overall environmental impact?

Dave

Monty Python

4,812 posts

198 months

Thursday 7th August 2014
quotequote all
Missed the obvious typo there....

TheEnd

15,370 posts

189 months

Thursday 7th August 2014
quotequote all
delboy735 said:
I'm going to sound really stupid now.....and not for the first time, how do you know if your car actually has DPF. I know mine has an EGR valve, that is becoming blocked up again, but don't know about a DPF. How do I find out ?
Have a look at the tail pipe, non DPFs usually point down to the tarmac, DPF equipped cars point out like a petrol.

That's more of a styling thing though, but a DPF equipped car will have a tail pipe you would swear is a fake cut off for looks that has never had anything through it, whilst a non DPF will be as black as hell.

Busa mav

2,562 posts

155 months

Thursday 7th August 2014
quotequote all
Monty Python said:
They do if the car is driven as it's meant to be -
That's not correct smile.

My Volvo covers about 18 k a year , mostly fast motorway miles, and the DPF needs replacing.

shoehorn

686 posts

144 months

Thursday 7th August 2014
quotequote all
jamieduff1981 said:
stuff about a bit of pollution
I take it you have never witnessed a dpf regen taking place,it does not burn all the soot away rather just a bit of it,the loosened soot that hasnt burnt off ends up coming out of the tailpipe in fecking huge plumes.
Its nothing more than a colostomy bag for cars,it does not magic the problem away,
it just hides it.
But at the end you are still left with a container full of st you need to empty from time to time
Just like a colostomy bag dpf`s just keep it in one place rather than spread everywhere.

kenno78

321 posts

156 months

Thursday 7th August 2014
quotequote all
I've used forte dpf cleaner and regenerator on a regular basis to help. Of all the additives, thats the one which has had most reported success.

shoehorn

686 posts

144 months

Thursday 7th August 2014
quotequote all
delboy735 said:
I'm going to sound really stupid now.....and not for the first time, how do you know if your car actually has DPF. I know mine has an EGR valve, that is becoming blocked up again, but don't know about a DPF. How do I find out ?
Take a look at your engine code BKD is non dpf,BMM is dpf.

Triumph Man

8,699 posts

169 months

Thursday 7th August 2014
quotequote all
shoehorn said:
Triumph Man said:
Austin?
Bedford?
Fiat?

If the last one, I didn't think they used the PSA Diesel V6 engine...
PSA DV6 is a 1.6 four cylinder diesel engine fitted to MINIS,peugeots,fords,citroens,volvos, etc.
whoops sorry thought you meant the 2.7 V6 getmecoat