That's a lot of oil in the compressor housing. I was thinking one thing you can try to eliminate possibilities is to disconnect the PCV hose going to the compressor U-shaped inlet tube on the passenger side turbo You would need to cap off the hole on the the U-shaped inlet tube. Then put a filter on the end of the connecting hose. Quick and dirty would be to use a piece of cloth as the 'filter' and rubber band/zip-tie it on. Drive around for a while and see if there is still oil buildup in the compressor of the turbo.

 

Car was with my dealer in December 2020 for a new revised Porsche aos and a supporting check valve.

I received the car back last week and drove 250km... had 1 medium blue smoke puff on start up yesterday.
don’t know yet if the issue is solved...

what a saga.

 

any updates?

 

this item was recently resolved by Porsche with the replacement of the supply and return oil lines.

check valve issue.

the first replacement was with the same part number now Porsche have updated the part in my car with a superior part number.

 

rm

 

Hi Rapter,
I would like to know if you had new smoke problems since the described resolution of 04.18.2021 , 09:54 AM

 

on the street or during normal driving:
there has been no smoke at start up following the repairs and no drop in the oil level

During track days
there are smoke starts occurring after 2 sessions and continuing throughout the day
oil consumption is around 1000ml per day

 

Ok Rapter,

So to recap the interventions on your car:
1. Turbocharger replacement: Did not solve the problem of smoke on startup for a long time.
2. Replacement of the original AOS (release 0) with the same original version (release 0) : Did not solve the smoke problem
3. Replacement of the original AOS (release 0) by a Porsche upgrade (release 1): This definitely solved the problem in daily driving conditions for about 1 year

Correct ?

How many miles have you travelled since the problem was solved? And what is the mileage of your car?
I ask these questions because I am in the same situation as you.

 

Summary:

Interventions:
1. Turbo Charger replacement
2. AOS replacement
3. Supply and return oil lines with sump check valve (passenger turbo side)

Item #3 solved the issue of smoke on start up temporarily until the failure happened again… then porsche had revised the parts and the issue went away (on the street).

item #3 is what solved the issue using Porsches revised parts.