dpf blocking

[WhydidIsellTD15]

I have had this TDI 6 for 2 years, in that time it has cost me over 3500 pounds to have the dpf cleaned.
I only do long journeys (hour plus) Tried over reving the engine and diesel cleaner like Red X etc,
but now I can only do 1800 miles before the warning light comes on and it@s back to garage to be
cleaned again!!!!! Is this just a fault with this van??

 

[BuilderJay]

Get it cut out mate.

 

[DXX]

I have had this TDI 6 for 2 years, in that time it has cost me over 3500 pounds to have the dpf cleaned.
I only do long journeys (hour plus) Tried over reving the engine and diesel cleaner like Red X etc,
but now I can only do 1800 miles before the warning light comes on and it@s back to garage to be
cleaned again!!!!! Is this just a fault with this van??

I’ve never priced up a new DPF but I’m fairly sure it’s cheaper than that, certainly in the long term.
It’s a filter with a finite life, renew it but first make sure that the engine not burning / consuming oil or over fuelling.
MOT failure in UK for missing or modified DPF.

 

[BuilderJay]

They cut the top so no one knows.
EGR delete too then the engine will last forever

 

[Lubrown]

I have had this TDI 6 for 2 years, in that time it has cost me over 3500 pounds to have the dpf cleaned.
I only do long journeys (hour plus) Tried over reving the engine and diesel cleaner like Red X etc,
but now I can only do 1800 miles before the warning light comes on and it@s back to garage to be
cleaned again!!!!! Is this just a fault with this van??

I’ve had my 2014 van 6 years now and never had an issue with the DPF. According to a sticker on the windscreen there is apparently a warning light that will indicate when the DPF wants a clean (and the sticker tells me a twenty minute drive at 1800 to 2500 revs will do that), but it’s never lit up.

Had the Golf (essentially the same engine) 12 years (from new) and again no DPF, EGR issues.

Regular servicing (10k miles or annually) and premium fuel, plus limit short journeys- no special treatment otherwise.

Thankfully neither of mine have AdBlue - I wonder if that’s the problem?

 

[Sasquatch]

Thereortically adblue should make no difference as its injected downstream, post-DPF. The DPF has long done its part before the gases then pass the adblue injector.

Dare we ask what engine variant the OP has...?

 

[WhydidIsellTD15]

Get it cut out mate.

Is that easy to do?? and will it be picked up on a MOT. Thanks for advice

 

[WhydidIsellTD15]

I’ve had my 2014 van 6 years now and never had an issue with the DPF. According to a sticker on the windscreen there is apparently a warning light that will indicate when the DPF wants a clean (and the sticker tells me a twenty minute drive at 1800 to 2500 revs will do that), but it’s never lit up.

Had the Golf (essentially the same engine) 12 years (from new) and again no DPF, EGR issues.

Regular servicing (10k miles or annually) and premium fuel, plus limit short journeys- no special treatment otherwise.

Thankfully neither of mine have AdBlue - I wonder if that’s the problem?

Wairning light comes on and driving at 1800 to 2500 never clears it, wish I kept my 2002 Transporter alot less trouble and
I'd driven over 275000 miles in that, this 2lt TDI 6.1 only 75000 miles

 

[Sasquatch]

Is that easy to do?? and will it be picked up on a MOT. Thanks for advice

Its not necessarily going to solve anything. Theres a reason it keeps blocking, and that cause wont have gone away and is still liable to cause you problems.

What engine variant is it, ie, the output?

 

[WhydidIsellTD15]

I’ve never priced up a new DPF but I’m fairly sure it’s cheaper than that, certainly in the long term.
It’s a filter with a finite life, renew it but first make sure that the engine not burning / consuming oil or over fuelling.
MOT failure in UK for missing or modified DPF.

Sorry miss guided you I had a new EGR valve fitted and all the other parts etc, then after 10months
warning light back on again, so EGR BLOCKED solid so that was then taken off cleaned etc so total cost so far is
Just under 3000 pounds. Now after 1800 miles warning light back on. So off road again in garage, no short journeys made I use
top grade fuel with a cleaner so now thinking of getting rid of this van, cost is to high.
Thinking may be a older transporter 2015's may be better.

 

[DaveD]

I have had this TDI 6 for 2 years, in that time it has cost me over 3500 pounds to have the dpf cleaned.
I only do long journeys (hour plus) Tried over reving the engine and diesel cleaner like Red X etc,
but now I can only do 1800 miles before the warning light comes on and it@s back to garage to be
cleaned again!!!!! Is this just a fault with this van??

My daughter bought a Nissan Qashqui diesel, had nothing but trouble with DPF blocking up, it would go into limp mode, even though she did plenty of long journeys.
Anyway, she drove it to our house, it went into limp mode again, DPF light on.
I limped it to Halfords, bought some Wynns DPF cleaner, the fuel additive type, I reset the light and thrashed it for 20 miles and it drove fine by the time I got home.
That was two years ago, she uses the Wynns product every 6-8 weeks and has never had a problem since.
That won't cure your EGR problem, but might help the DPF.

 

[WhydidIsellTD15]

Its not necessarily going to solve anything. Theres a reason it keeps blocking, and that cause wont have gone away and is still liable to cause you problems.

What engine variant is it, ie, the output?

Engine output 83 BHP, just getting fed up of being off the road every 1800 miles

 

[TEESIXY]

I've had a T5, a T5.1 and a T6, all from new. The problems with the T5 174 i wont bore you with on here, but i think that the T5.1 140 was as good as they got. No ad blue and after a long run it wouldn't do a re gen for quite some time. The T6, on the other hand will sometimes start a regen the next day, after a 200 mile run. The parameters must differ between the two.

 

[DXX]

I've had a T5, a T5.1 and a T6, all from new. The problems with the T5 174 i wont bore you with on here, but i think that the T5.1 140 was as good as they got. No ad blue and after a long run it wouldn't do a re gen for quite some time. The T6, on the other hand will sometimes start a regen the next day, after a 200 mile run. The parameters must differ between the two.

Very likely, completely different engines. Assuming the DPF has the same cross section and filtration spec’ on all models. (Big IF) then the amount of carbon (soot) being collected is related to the fuel / oil consumption (mass gas flow) and exhaust gas temperature.
Higher exhaust gas temperature - cleaner burn - less soot.
Lower exhaust gas temperature ( purpose of the EGR re-ingestion) - inefficient burn - more soot.
The EGR is there to reduce Nitrous Oxide, no other purpose and it screws the combustion, inlet tract and engine oil.
As a DPF accumulates ash the effective cross section available to pass exhaust gases reduces, so it’s accumulated mileage dependent. The only time it’s going to be as good as the day it rolled off the production line is the day you renew the DPF.
Snake oil, blow backs and the rest of the shenanigans just provides somebody with your hard earned £ before you bit the bullet and buy a new one.

 

[BuilderJay]

Is that easy to do?? and will it be picked up on a MOT. Thanks

Is that easy to do?? and will it be picked up on a MOT. Thanks for advice

So I hear they take off the exhaust. Cut a square in the top. Remove the dpf then weld a bit of metal over the top which isn’t visible.
Then remove egr and delete Adblue.
Trouble free motoring.
This is actually what my mate who works at a Vw Commercial dealership said.

This comment will get backlash from the Green Legal team on here.

 

[Macp]

I know of countless trades people who have had enough of the bills and losing turnover when the van is off the road. So they took what they considered to be the only solution.

 

[DXX]

So I hear they take off the exhaust. Cut a square in the top. Remove the dog then weld a bit of metal over the top which isn’t visible.
Then remove egr and delete Adblue.
Trouble free motoring.
This is actually what my mate who works at a Vw Commercial dealership said.

This comment will get backlash from the Green Legal team on here.

Great until the opacity test fails at the MOT.

 

[The Bear78]

I have had this TDI 6 for 2 years, in that time it has cost me over 3500 pounds to have the dpf cleaned.
I only do long journeys (hour plus) Tried over reving the engine and diesel cleaner like Red X etc,
but now I can only do 1800 miles before the warning light comes on and it@s back to garage to be
cleaned again!!!!! Is this just a fault with this van??

What's your oil usage like? If it's burning oil it is likely to block the DPF quicker.

 

[Lubrown]

Great until the opacity test fails at the MOT.

The Gov know this tampering is happening and are (at glacial pace) looking at how best to address it. So maybe future MOts will be stricter on this too?

As you and Sasquatch have said - it’s a replaceable service part and the fact it’s filling up may well point to other problems. Chipping it out won’t help those. Beginning to think some people these days, with AI smooth brain becoming more prevalent, would suggest people leave out air and oil filters as they just sap power and keep filling up with crud.