So my turbo is again leaking from the compressor side.
I found the breather from the case to the oil tank also leaking.
Now after researching for causes, I found this pipe can get quiet a lot of oil slung into it. If this breather is flowing oil to the tank it can be said that there is no blockage which I read blockage could cause crank case pressure to build. In turn this pressure can force oil into the turbo and if filled above the shaft bearing/seals oil will run into the housing.
With a correct functioning check valve this should not be possible.
A scavenge pump that is correctly working and not allowing flow back to the catch tank would not allow the turbo to fill with oil either.
So if this is a correct summary the oil leak has to be from the turbo when it has been running and when parked the oil seeps from the up pipe connection.
Of course if I gave it a boot full of boost to clear the compressor side immediately prior to shut down the oil would be pushed back up through the IC.
Sound plausible ???
