how can i fix my skoda octavia tdi 2001?

This could possibly two or three things.You could simply be topping up the oil too much and it is being drawn through the breather hoses and into the cylinders.Or the turbo hoses need removing and the residue needs cleaning out(quite common on tdis).Or maybe you have recently had the timing belt changed and it is one tooth out.Hope this gives you a couple of new angles to look at.

Somerset Grev.
April 2010