I have a 1999 1.8t a4, this car has been a constant battle since i have gotten it. I have blue smoke coming from the exhaust everytime i drive it, it just started about 3 months ago, im constantly loosing oil and the same code keeps coming up saying its running to rich. The MAF has been replaced, the car doesnt overheat, there is no oil in the coolant, and when the oil is checked its always clean no milky color or nasty crap in it. What can be causing the car to produce blue smoke?

 

turbo seal

 

would the seal also make the turbo feel like its not boosting all the way? the car feels as if its a lil sluggish and doesnt have the same power it use to.

 

would the seal also make the running to rich code to pop up? the turbo doesnt feel like its not boosting all the way, it feels as if its a lil sluggish and doesnt have the same power it use to.

 

blue smoke is oil indeed. If none of those other things are appearing, and it's not the turbo seal, it could be piston seat (proper term?). Not to scare you or anything. My Impreza had that issue.

 

3 months eh? Burning oil to the point of blue smoke will fowl an o2 sensor. Causing terrible gas mileage and poor overall performance. Also will fowl a plug or 2. If i were you, I would do a compression test to see if my rings are allowing blow-by and then based on that conclusion check the turbo. Really, those are the only 2 things I would consider at this point...hope it helps narrow the search