i noticed that when i drove with my back sliding window open i kept smelling burning oil. also when i would get on the throttle when my chips in 120 white smoke would come out first followed by black. i pulled the vacuum hose off the diaphram on the turbo and its coated in oil. i'm pretty broke right now. what the best way to take care of this problem? can i rebuild it for alot cheaper than a new or upgraded?