Regarding the carbon on the shaft that you observed, it is indeed highly likely that the rear shaft seal was leaking Another way to identify the oil seal leaking is by letting the engine idle for a min or two and then pull away normally (engine under load) if seals are leaking there will be some blue/white smoke, which then clears When the rear seal leaks, it allows hot exhaust gases from the turbine housing to enter the bearing housing
Turbo Oil Leak ? | Turbo Leak Causes | Understand a Turbo Seal Leak
This contamination can cause the oil to degrade rapidly, leading to sludging and coking
Here we explore some common causes of oil leaks and things to check if your turbo leaks oil.
10 reasons a turbo leaks oil (and then smokes) turbochargers are a fantastic way to add huge power to any powerplant, however, if the system is not designed properly you can spend a lot of time and money repairing turbos and chasing issues Today we are going to cover why turbochargers smoke, how their seals work, and
