XC60 D5 excessive crankcase pressure, Turbo leaking oil

[Clan]

Originally Posted by Thomasd258

So found the cause of the issue of the crankcase pressure and oil leak.

The secondary turbo has completely failed and the exhuast gases were escaping into the oil side of turbo as its seized solid and pressurising the crankcase.

I've got it mostly stripped out literally down to the last 2 bolts which is on the exhuast outlet of the secondary turbo with the square flange and 4 bolts. Got the front 2 out but can't get to back 2. Have ordered a wera 16mm joker spanner with 15 degree rotation to try that but otherwise I'm stuck.

Any suggestions?

wow , there is olny usually one cause of turbo failure .... oil supply or quality problems . you are using the correct 0w/30 A5/B5 oil I hope.