204PS CXEB Bi-Turbo snapped small turboshaft

Deansie

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Hi to all of you,

From Sweden and new to the forum, searching the web for people with similiar issues brought my here with my broken van. The van is a 2016 VW Caravelle 204ps DSG 4Motion.

Background:
Bought the van from a VW dealership a year ago when it had ran 197500km (roughly 122k miles) and we noticed within the first month that the engine consumed alot of engineoil (approx 1L/1500-1800miles) . The dealership shrugged their shoulders and told us it was normal for the van but they did find that oil had pushed thru the seal of the oilsump and got this exhanged, clearly this little oildamp on the sump wasnt the major issue and the high oilconsumption contiuned. Not knowing what to do, we turned a blind eye and continued to use the van and just kept a good eye on the oillevel and topped up as needed.

A couple months ago at 142k miles the van started whisteling loudly from the turbos nearing the end of our 220 miles trip. Subsequently we where stranded because we got approx 800m longer down the road when suddenly we lost almost all power and the van wouldnt let us drive away from standstill. Ended up in getting it towed to the same dealership we bought it from (they were closest and they have their own repairshop). The repairshop found that the shaft on the small turbo was snapped and could have been a result of low engineoil level, this couldnt have been the case since we had a close eye on the oillevel. they also found that the EGR-valve was stuck in an open position and this meant that we were forced to also replace the exhaustcooler. We were quoted about 7000 euro to get the turbos and exhaustcooler exchanged. They took no liability for this even though we clearly meant that it must have had something to do with the high oilconsumption.

Were we are now:
Brought the van home and decided to take on the job myself and in the process do a EGR-delete to protect the engine and maybe even DPF-delete. Prior to swapping out the turbos I was wondering if anyone know if you can set the oilpressure to max according to the workshopmanual with a tool like Carista, OBD11 or VCDS? I´m keen on doing this the right way as I probably cant afford another mishap, but maybe this stage isn´t always necessary?

Thanks in advance!

P.s: Spoke to RetroResus and they told me they have seen this quite a few times now, were the engineoil have blocked the DPF with high backpressure and heat on the turbo causing the shaft to snap. However, the dealership have nEeEEeeEevVvVveeeEeRrrRR heard of this before.

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ill add you to the CXEB high oil use and failed turbo list. . .






.
 
I hope someone can answer my question wheter it is mandatory to max out the oilpressure in the engine when a turboswap have been performed.
 
I hope someone can answer my question wheter it is mandatory to max out the oilpressure in the engine when a turboswap have been performed.
If it says it in the vw book.

Then it's necessary.

Not sure how long the high pressure program runs for?

Assuming it's for a setup amount of miles?

It mentions 1000 km above
 
If it says it in the vw book.

Then it's necessary.

Not sure how long the high pressure program runs for?

Assuming it's for a setup amount of miles?

It mentions 1000 km abo

That is my interpretation of it to, however it also states ”if the function is available in the control unit”.

Genuine VCDS (HEX-V2 or HEX-NET) can do this. Possibly also OBDeleven.

Anybody out there with a CXEB engine and OBDeleven that could check if the function is available.

I can rent a HEX-V2 but would rather buy a OBDeleven for all its other functions. Feel so cheap messing about for approx 100 euro but I like to do my research!
 
Yes, the function is available also in the OBDeleven for CXEB.


Curious what they are?
Wonderful, an OBDeleven it is!

I was thinking about reading faultcodes, activating hidden functions etc. Ofc this can also be done on VCDS, but for me VCDS would only be possible thru renting due to its pricetag.

Edit: There seems to be a bunch of different versions of OBDeleven, do you know if everyone of them are able to activate the function?
 
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VCDS would only be possible thru renting due to its pricetag.
You surely have taken into account that OBDeleven needs a subscription to be useful - even for setting the run-in oil pressure for CXEB.
See under "Plans" for the functionalities.
 
You surely have taken into account that OBDeleven needs a subscription to be useful - even for setting the run-in oil pressure for CXEB.
See under "Plans" for the functionalities.
Wow thank you, this completely went under my belt. I guees i’ll go with VCDS after all.
 
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@Deansie hej fra Norge.
byttet du bi-turboen på bilen din?
hvordan gjorde du det?
vi skal gjøre det samme selv nå
Hey there!

That is correct, I swapped the turbos and it was a for me, alot to learn before getting started.

First of was to really go thru the turboswap section in the repair manual about 10-20 times to really understand the procedure.

Next was ordering all the parts, and wait, and wait … and wait, to get the wrong thing, and wait a little more.

Once started, it was off with all perifirals in the enginebay to make room for the extraction of the turbos and manifold just to discover… how the heck will this work out, since its really narrow and the space between the head and the firewall is not kinda too small to be able to extract it.

Next step is under the van, remove dpf and downpipe to get access to all the bolts and wires and pipes and what not.

I don’t really know how much time i spent on disconnecting the ol returnpipe connection in the block since its hidden behind a motormount-bracket. I needed customized tools in order for it to work, I bet just this bit is in the ballpark of 10 hours.

Not to mention pulling out the turbos once loose and all, it’s so damn cramped that its really only possible to extract it in a particular angle and that also requires some modificatiön to some proctectionsheets in the engine. I think it would be easier if you removed a couple of motormounts but then again you would need a jig to hold up the engine… all the while trying to fit in the cramped space.

If I were to do it again, I would without a doubt lift down the engine with the complete subframe and do the work outside of the enginebay. I can’t stress enough that I think I’m just really lucky to be able to tighten the returnpipe onionbolt enough to not having it leeking afterwards.

If you have any specific questions I’d be happy to answer them if I can!
 
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