DPF Regen Frequency / Issues / Force discussion.

[steven mitchell]

I can't comment on the turbo seals, they may have failed.
I very much doubt that you need a new DPF, it's easier and more profitable for them to replace it than clean it.
If you decide to get it replaced, ask them for the old one back, watch their faces drop. A DPF, blocked or not, is worth good money due to the rare metals inside it.

A mobile mechanic in Bedfordshire (I know, it's not practical for you due to distance) uploads videos to Youtube and shows how he unblocks DPF's that garages have said must be replaced, without removing them from the vehicle. He does a lot of work for garages that can't solve DPF problems. I've never met anybody from the company and have no connection to them but two friends have used them who had persistent DPF problems and were very happy with the outcomes.

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

I think you are doing the right thing looking for a local specialist.

Yeah cheers mate,just wanna get it right, love the van and wanna keep it, just seem to be struggling with people around me to look at it! van really won’t make it anywhere I think ( don’t wanna ruin it completely) and everyone I get advised to use are 100’s of miles away!! Ha ha but we’ll get there but not good whilst I don’t have another vehicle to use In the meantime but hey ho

 

[steven mitchell]

I can‘t see how the DPF can be damaging an engine, do you mean EGR?

If you do delete it off the brain will ya end up with a Smokey van? And obviously you need to use a garage that WILL mot it from now on ! Ha ha

 

[Howzat]

I think the burning oil due to leaky seals is causing the smoke. Everything else like the EGR and DPF are not the issue but are affected because of the smokey issue.

 

[steven mitchell]

I think the burning oil due to leaky seals is causing the smoke. Everything else like the EGR and DPF are not the issue but are affected because of the smokey issue.

I think the burning oil due to leaky seals is causing the smoke. Everything else like the EGR and DPF are not the issue but are affected because of the smokey issue.

Tried driving it to the local garage ( less than 5 mins away) but it died on me, left it for 5 mins and luckily it started again. And I just managed to get it home. I started to hear a bit of tapping ( which I have heard very faintly when all this started a few months back, not all the time) but on this occasion it was a little louder, should I be worried about that? spoke to a mechanic mate of mine and he said if it’s bad then not to bother doing any work on the van, ( he did manage to listen to it and he didn’t think it was that bad, but he did say he’s going deafer but seemed ok to him. vw also mentioned this ( a faint noise)! and my mechanic mate and vw don’t want to do the work on my van, is there a reason for this? My mate said it’s a shitty job and he’s a Land Rover expert so busy doing all them and vw just said they don’t know the van, no history with them and they don’t want to put there name to it, ( as they have had many problems in the past with people! ) also they kept going on about the remapp I had done years ago so all the computer side of it is all over in there words!

 

[Merryman]

Right ERGR not DPF thanks for the correction DXX

 

[mmi]

two friends have used them who had persistent DPF problems and were very happy with the outcomes.

Did they have also AdBlue system on-board?

 

[DaveD]

Did they have also AdBlue system on-board?

Both 2019 vans so I guess so.

 

[mmi]

Both 2019 vans so I guess so.

Thanks - good to know. I have had concerns about DPF cleaning because on T6 NOx SCR catalytic converter (the NOx trap) is integral part of the DPF - just not to flush also the catalyst coating (likely "only" copper zeolite).

VW SSP 564, p.28.

SSP 564 - The T6 2.0L TDi

VW Self Study Programme, Document 564 - The 2.0 litre TDI Engine In The T6 The introduction of modern, particularly efficient Euro-6 engines represents a central feature of the new T6. All units are equipped with Blue Motion Technology as...

www.t6forum.com

The coating material is mentioned in the VW Self Study Programmes below - e.g. available here

VW SSP 424 Exhaust Gas Aftertreatment System Selective Catalytic Reduction,​

VW SSP 540 SCR Exhaust Gas Treatment (Passat 2015),​

VW SSP 446 The 2.5l TDI EURO V engines with SCR system in Crafter​

 

[DaveD]

Thanks - good to know. I have had concerns about DPF cleaning because on T6 NOx SCR catalytic converter (the NOx trap) is integral part of the DPF - just not to flush also the catalyst coating (likely "only" copper zeolite).

VW SSP 564, p.28.

SSP 564 - The T6 2.0L TDi

VW Self Study Programme, Document 564 - The 2.0 litre TDI Engine In The T6 The introduction of modern, particularly efficient Euro-6 engines represents a central feature of the new T6. All units are equipped with Blue Motion Technology as...

www.t6forum.com

View attachment 204873

The coating material is mentioned in the VW Self Study Programmes below - e.g. available here

VW SSP 424 Exhaust Gas Aftertreatment System Selective Catalytic Reduction,​

VW SSP 540 SCR Exhaust Gas Treatment (Passat 2015),​

VW SSP 446 The 2.5l TDI EURO V engines with SCR system in Crafter​

It seems to me that cleaning a DPF carries risks, but when your DPF is so full / blocked that it won't allow a forced regen you have two options, the very expensive option of a new DPF, or far less expensive option of cleaning it and accepting that it may be damaged in the process.
The two guys I know have had no issues over a year after having their DPF's cleaned, although I will qualify that, neither of those were VW, both were Ford Transits, both had been doing lots of journeys less than 20 minutes from cold.

 

[steven mitchell]

Hi all, quick question, can I tow my 4 motion to the garage

 

[Scottish Scrutineer]

Hi all, quick question, can I tow my 4 motion to the garage

Yes

 

[steven mitchell]

Yes

No apparently a4 wheel drive you can’t I’ve learnt since

 

[steven mitchell]

Hi all, more updates on this terrible time I’m having!!!
If you’ve read my threads then you know I’ve had a mare with the smoking van. So the latest since then is I’ve put a new turbo, egr valve, cam kit and hoses on, and cleaned the new Dpf filter!! van still smoking and adblue problems, (500 mile and no restart) so deleted adblue
So tried changing glow plugs (2 stuck in 1 being the the pressure sensor one) so specialist to drill em out!!! expensive fix, van still not right
Starts and ticks over and sounds good but extreme black smoke bellowing out when reved!
And when trying to drive, it struggles, had a AA (vw specialist round to look at it and he thinks I need to look at the intake side of things ( not enough air possibly and he thinks my new Dpf is either broke up inside or has a crack in it to let soot through cause if it was working properly it wouldn’t let smoke through!! The garage I’ve been dealing with don’t agree and think it’s an injector issue so need to get them checked!!! But the vw guy says if it was them the engine wouldnt be as sweet as it sounds when ticking over! Any advice anyone cause I’m nearly 9 grand in and loosing the will to live with it, love the van but causing no end of trouble for me
Help and advice anyone with any knowledge be much appreciated

 

[DXX]

You didn’t mention a re-map until post #6. Removing this modification would be a very good starting point.

 

[steven mitchell]

You think so? everyone knows about it but not one person has ever said this is an issue, and the van has been Orite for nearly 3 years ( had that done when I bought it ) I know what your saying but why now? Surely if there was a problem with that, it would have flared up within months of doing it wouldn’t it?!

 

[steven mitchell]

having a dispute with the garage now!!! Sent it to another garage who have said it needs a new turbo ( stuck a camera down it and it shows the actuator sticking on) so they think it’s ceased or something, similarly the Aa man heard a noise which he said at the time ( he’s heard once before) and it was the turbo!! So got 2 independent people saying turbo issue, but garage say it can’t be, new turbo! If there’s soot and shit in it it will stick!!! Needs a rod and some turbo cleaner to get rid of it!! they still think it’s injector issues but other guys say it’s running sweetly so csnt be ( would be missing and running like a bag of shit!! ) so garage unwilling to take turbo off at there cost to check it, saying it’s going to cost me!! other garage saying that basically need all work doing again, and I’ve spent nearly £8000 !!! do I have a right under warranty or any consumer rights for the garage to re do the work? Any help/advice would be really good at this time, thanks guys

 

[Bigsidavies]

There’s a thread from @Tourershine where he had no end of turbo trouble and in the end replaced the turbo. He subsequently had loads of smoke, removed the remap and put back to stock and the problem went away. As @DXX said previously that has to be the cheapest thing to eliminate before you go down any other route.

 

[T6Andy]

74k is low mileage for needing a replacement, I recall seeing a post by @mmi that inferred they are good for 150k or 200k miles. I would therefore want to find out why it got so blocked at 74k miles, in case you put a new one on and that gets blocked too… happened to me once after paying for an EGR replacement, I was beyond angry!

My 204 shuttle needed for cleaned out at 48k miles, completely blocked and in limp mode!

 

[T6Andy]

Had my dpf removed about 6 weeks ago. Reason, was seeing a lot of reports of failures and damaged engines. Cost about £400 labour and blanking off. Result is quicker, and fuel economy up from 30-32 to 39-45. So will recover the cost in about 2 years at my annual mileage. No outside visibility issue as looks just the same. Engine is a 147KW = 180BHP I believe.

So they left the dpf in place for visibility purposes but knocked the guts of it out and then coded it out?

 

[NickyBrown08]

Hi All,

Had exact same problem, had flashing coil light for months, people scanned it and couldn’t find anything. Came on couple of weeks ago, restarted engine and went off. But accompanied by turbo whining.
Took it for a smoke test to see if had any leaks on pipes, none.
Took it to another garage and he spotted problem within 20mins. DPF was blocked, not letting gasses through. Them being pushed back and making turbo work overtime. And it’s just failing.
So now booked in for a new turbo and considering getting DPF removed and deleting. Really don’t want this again.

Had my dpf removed about 6 weeks ago. Reason, was seeing a lot of reports of failures and damaged engines. Cost about £400 labour and blanking off. Result is quicker, and fuel economy up from 30-32 to 39-45. So will recover the cost in about 2 years at my annual mileage. No outside visibility issue as looks just the same. Engine is a 147KW = 180BHP I believe.

Hi Merryman.

Have you had any issues with your DPF removal. Considering mine doing as it’s caused turbo fail when blocked. And really don’t want it happening again. Cheers.