204ps Bi-Turbo CXEB T6 Engine preventative measures?

[Brindle]

Hi All,

I know there are various threads reporting problems and those affected, but I thought it was worth throwing this out there for discussion. So far, everyone I have spoken to (including specialists) suggest differing approaches. FYI, mine is a 66 plate 2017 vehicle that's done 54k, standard all round engine and drivetrain wise and not currently using excessive oil (lucky me!)

However, I am of the opinion that I'd rather spend some money now to prevent failure rather than wait for it to happen an face a massive bill and loss of the van for weeks.

But . . . . . everyone seems to have a different opinion on what that preventative measure might be including:

1. Remap and delete the EGR
2. Physical EGR delete and remap
3. Replace EGR with latest stainless unit that will not corrode
4. Sell the van whilst its good and get a 150 (I have put to much time and love into the van to really want to go down this option)
5. ???

Any thoughts? Is there a fool proof way to invest now to save later for this issue?

 

[DXX]

Some how get the EGR disabled.
Oil service at no more than 8000 miles, even with the EGR disabled the soot level will be close to the Caution threshold by this point. (Based on my 180 ps analysis).
Oil analysis every 4th oil service.
Don’t use for short journeys.
Monitor the DPF status with Carista or similar and never ignore high soot levels / failed regen’s.
When the ash level in the DPF reaches the threshold, don’t keep driving the van wondering if it will be OK!
Don’t take a chance by cleaning the blocked DPF, replace it, it’s cheaper than a turbocharger ass’y.
Don’t run the van with a defective fuel system, ie failing injector causing fuel dilution of the engine oil.
Don’t use the Stop / Start, this stops the engine while the turbo chargers are still spinning, killing oil pressure instantly.
Occasionally run the engine at tick over with the oil filler cap off, check for excessive crankcase pressure, excessive pressure will act of the turbocharger oil drain line and reduce oil flow.
Don’t map the engine, sell the van and buy a Impreza and a rubber elbow for the window.

 

[Kind of Blue]

Buy a 199bhp version T6 or T6.1 or replace the engine for the same. I doubt that fiddling about with the emission would make the slightest difference. I have only scan read the main thread but it appears to me that it was design that has made them susceptible to an early demise rectified in the 146kw / 199bhp offering.

 

[Dellmassive]

Hi All,

I know there are various threads reporting problems and those affected, but I thought it was worth throwing this out there for discussion. So far, everyone I have spoken to (including specialists) suggest differing approaches. FYI, mine is a 66 plate 2017 vehicle that's done 54k, standard all round engine and drivetrain wise and not currently using excessive oil (lucky me!)

However, I am of the opinion that I'd rather spend some money now to prevent failure rather than wait for it to happen an face a massive bill and loss of the van for weeks.

But . . . . . everyone seems to have a different opinion on what that preventative measure might be including:

1. Remap and delete the EGR
2. Physical EGR delete and remap
3. Replace EGR with latest stainless unit that will not corrode
4. Sell the van whilst its good and get a 150 (I have put to much time and love into the van to really want to go down this option)
5. ???

Any thoughts? Is there a fool proof way to invest now to save later for this issue?

Unfortunately if you are one of the unlucky ones no PM will help.

The block wears and it needs replacing.... Normally start to loose oil around 80k miles.

As for turbo.... It's thought that a blocked DPF can cause back pressure and run the bearing dry causing turbo failure...
So make sure the EGR and DPD clear.

More info...

Thread '- 204ps Bi-Turbo CXEB T6 Engine & Turbo problems -'

17 Aug 2024

- 204ps Bi-Turbo CXEB T6 Engine & Turbo problems -

Looks like im the latest patient of the CEXB engine issues.

(possibly the 2016-2018 range as there is a mention that the CXEB Block etc was revised in 2019)

(the CXEC 199ps Bi-Turbo was released 2019> and revised )

in sort it looks like its either Turbo or Engine failure.

here is some background:

******************************************************************
204ps Bi-Turbo CXEB Engine & Turbo problems...

• Dellmassive
• cxeb engine
• Replies: 497
• Forum: Engine, Gearbox, Exhaust, Drivetrain

• 
• 

 

[DXX]

Buy a 199bhp version T6 or T6.1 or replace the engine for the same. I doubt that fiddling about with the emission would make the slightest difference. I have only scan read the main thread but it appears to me that it was design that has made them susceptible to an early demise rectified in the 146kw / 199bhp offering.

Isolating the EGR makes a massive difference to the soot levels in the engine oil as well as enabling the engine to run slightly hotter and burn the fuel more efficiently.
I can’t think of many things more detrimental and likely to trash an IC engine than pushing excessive amounts of soot into the piston ring running clearances.

 

[Del94]

Buy a 199bhp version T6 or T6.1 or replace the engine for the same. I doubt that fiddling about with the emission would make the slightest difference. I have only scan read the main thread but it appears to me that it was design that has made them susceptible to an early demise rectified in the 146kw / 199bhp offering.

How much does it cost for this engine swap

 

[DXX]

How much does it cost for this engine swap

Probably about the same as a failed engine so I can’t see the benefit?!

 

[Zave]

Last year I had new dual mass flywheel and clutch. This year turbo, egr and dpf. I've come to expect that this is wear and tear for a 125,000 mile van.

 

[DXX]

125K miles is nothing, IMO if that’s the first EGR then you’re doing well, the rest shouldn’t have failed by then.

 

[Dellmassive]

Swapping the 204 for a 199 is a great fix...
If you can find one from a crash damaged T6.1.

There are a few on here that have done it.

Not sure exactly what bits you need for the swap.... But it can be done relatively easily....as the only proper way to fix the cxeb is a new engine from VW circa £15k

Where as a 199 engine could be £5k from a breakers.

 

[Del94]

Swapping the 204 for a 199 is a great fix...
If you can find one from a crash damaged T6.1.

There are a few on here that have done it.

Not sure exactly what bits you need for the swap.... But it can be done relatively easily....as the only proper way to fix the cxeb is a new engine from VW circa £15k

Where as a 199 engine could be £5k from a breakers.

Exactly what I was thinking! Vans running fine now but it’s a good idea to plan for the future.

 

[Dellmassive]

Exactly what I was thinking! Vans running fine now but it’s a good idea to plan for the future.

Yes. I think that's what I would do .

Get a local indy to source and fit a used 199.

Or just get a 150 single turbo?... Heaven forbid.

 

[TJH1985]

Swapping the 204 for a 199 is a great fix...
If you can find one from a crash damaged T6.1.

There are a few on here that have done it.

Not sure exactly what bits you need for the swap.... But it can be done relatively easily....as the only proper way to fix the cxeb is a new engine from VW circa £15k

Where as a 199 engine could be £5k from a breakers.

What about the 204 from a T6.1, my T6.1 is its 150kw on all the documentation which is 204ps I believe? Or are all 6.1's 199?

Mine is a DMZA I think? I have the 5yr factory warranty, but would ideally like to keep it much much longer.

 

[Kind of Blue]

What about the 204 from a T6.1, my T6.1 is its 150kw on all the documentation which is 204ps I believe? Or are all 6.1's 199?

Mine is a DMZA I think? I have the 5yr factory warranty, but would ideally like to keep it much much longer.

T6.1 is 199bhp 146kw as are some very late T6 mainly from 2019.

I have a 2019 146kw 199bhp T6 Caravelle 4Motion Exec + diff lock.

 

[TJH1985]

Why does it have 150kw on all the documentation then? Just rounding up?

Even in the online portal it shows as 150kw.

 

[Kind of Blue]

Why does it have 150kw on all the documentation then? Just rounding up?

Even in the online portal it shows as 150kw.

View attachment 296214

It is possible things might have been revised over the time T6.1 was in production and that my assumption is not correct for the whole of the Twin Turbo Production in the T6.1 but as far as I know it is 146kw possibly it had been rounded up I have no way of checking other than wiki or similar. Dellmassive or Pauly or mmi on This Forum might know the whole accurate history and development of the T6.1 as they have access to many files relating to all things T6 and T6.1 and a whole lot more.

 

[Dellmassive]

T6.1 is 199bhp 146kw as are some very late T6 mainly from 2019.

I have a 2019 146kw 199bhp T6 Caravelle 4Motion Exec + diff lock.

See here ..

Thread 'VW Transporter Engine codes (T5-T6.1)'

10 Oct 2024

VW Transporter Engine codes (T5-T6.1)


do we have a definitive list of engine codes?

if not then lets get one sorted out.

ill start the list, . . .

and in info below and ill update the main list.

• Dellmassive
• caac engine cxhb engine dmza engine dnaa engine dnab engine dnac engine
• Replies: 11
• Forum: Engine, Gearbox, Exhaust, Drivetrain

.

 

[Dellmassive]

+++++++++++++++++++++++
@dergy7 - SSP 820433 EA288 2.0L Derv Engine T6.1?

Here is the SSP 722 PDF file I found containing the EA288 Commercial (EA288 Nutz) Diesel Engines (66kW DNAC, 81kW DNAB, 110kW DNAA, 150kW DMZA)
They are used in Mono Turbo TDI and Twin Turbo BiTDI T6.1 models after 2020.
Those new EA288 engines are very different from the EA288 series engine used in pre-2020 T6.

For example, old T6 BiTDI CXEB engine used Delphi system solution (DCM 6.2 management ECU with 2000 bar dual-piston HRP738 high-pressure common rail pump and solenoid valve HRD372 fuel injector)

on the new T6.1 BiTDI DMZA engine used Bosch system solution (MD1 CS management ECU with 2500 bar single-piston CP4.1 (CP4E/R45) high-pressure common rail pump and solenoid valve CRI 2-25 NC fuel injector)

Both engines have the same power output (150 kW at 4000 rpm) and roughly the same power band (older CXEB have 150 rpm more max torque band)

All the changes are for the new DMZA engine to have better emissions on paper.

 

[Dellmassive]

The Dmza is the latest T6.1 bitdi engine, rated at 150kw

 

[Kind of Blue]

The Dmza is the latest T6.1 bitdi engine, rated at 150kw

When did the latest The Dmza is the latest T6.1 bitdi engine, rated at 150kw come into service?

Above, "Both engines have the same power output (150 kW at 4000 rpm) and roughly the same power band (older CXEB have 150 rpm more max torque band)"

Originally the CEXC was rated at 146kw 199bhp even today a member with a T6.1 confirmed to me today that his logbook stated 145kw 199bhp For Sale - 4 MOTION SWB DSG FOR SALE

So I am very confused...........but the wife said dont worry about it dear you are always a little confused just do as your told and it will all be very clear in the end.........................................