I have been having issues lately with my Cruze. I have been noticing blue smoke coming out of my exhaust. What happens is that I will go WOT to get onto interstate, get up to about 75 MPH, and then if I slow down and then re-accelerate under light throttel, the blue smoke pours out of my exhaust for 1 or 2 seconds and my car runs very rough. In normal everyday driving and acceleration I have no issues. Iin the past month I have had to add at least 2 quarts of oil to my engine.
I inspected my spark plugs and they have oil fouling. I took off the pipe that connects to my throttle body and a good deal of oil poured out of the tube and the throttle body. I do know that most of the turbocharged ecotech engines get a small amount of oil in the throttle body, intercooler and piping and that it is normal but the amount of oil that poured out of mine definitely is not.
I crawled under my car to see if I could see anything there, and I found that oil is leaking from the joint between the intercooler and the piping between the turbo and the intercooler. It makes sense as that is the lowest point and is where the oil is pooling.
So I think that my turbo is leaking oil from the bearing and seals and it gets worse when the turbo is at full boost. By the way, my car does this completely stock.
I took it to the dealership and they told me that they have to replace the air piping between the turbo and the intercooler because that is the cause of the leak!! Last I checked, a pipe that is only supposed to have air flowing through it shouldn't spontaneously leak oil. But because my car is under warranty, I am going to have to let them screw around with it and waste my time and hope that I get someone who knows what they are doing.
I hate dealerships.