My smoking problem!
I own a 2005 2.0 WRX which now has 126000km on the clocks. I have had this problem for a while now and took the car to the Subaru dealership a year and a half ago and they could find nothing. Every now and then, while it's warming up it will puff some smoke after standing at a red light or similar. It does not smoke on start-up, only about half way through to normal engine temp. Usually about 2-3 minutes into the drive. It also does not do this every day, but every other day.
Now a year ago the car went into the body shop for some repair and a respray after a hailstorm hit us. Long story short, the car stood for over a month without being driven. When the day came to pick it up, it started up as normal, no smoking. After about 2-3 minutes of driving, it started to smoke, and boy did it smoke. It was pouring out of the exhaust! It continued until the car was at normal temps, and then stopped.
I'm leaning towards a bad oil seal on the turbo, or something else on the turbo. My theory been that oil is pooling up in the exhaust and been burned off when the pipe gets hot. After it stood for so long maybe more oil pooled up and that’s why I had so much smoke? It still seems to be boosting fine but this is starting to annoy me now. It’s actually more embarrassing than annoying.
Any help or suggestions would be appreciated.