turbo leaking oil

[Marajin]

(02-26-2016 )Cuya Wrote:  A bad manifold gasket on either block or the turbo mounting gasket can cause a leak from the seals. It makes turbo spin slower than it should and makes a vacum at the joint.

a truck with vnt type turbo, stock tuning, and high turbo positon will always have positive pressure. A leak would only lower fuel mileage.

A vacum at outlet of turbo can only happen on trucks with non-vnt turbo or if they have vnt tuning in them that slows down the turbo to a low position at idle.


If someone has custom tuning and low vnt positions, they need to make sure they do not have leaking manifold gaskets and they also always need a low positive crank case pressure. This would help to prevent oil leakage at face of turbo.