if your getting oil smoke but only on start up, then it could be worn valve stem seals. But seeing as you have a relatively new 04 WRX. Thats highly unlikely.
Does it happen all the time? Like in the middle of the afternoon? Or only in the morning? As it could just be condensation inside the exhaust pipes burning off.
As for the noise. Its probably just the diff. Check the condition of the rear diff oil and any possible leaks out of the rear diff and change the oil if neccessary.
__________________
RS Liberty - Because WRX's are only good for parts...
|