I was hoping someone could help - I have a 2.0 petrol non turbo Impreza GX Sport and I have a cylinder 3 misfire. Oil is leaking into the cylinder chamber. I sent it to Subaru as I thought they would be able to tell me what was causing the problem so I could fix it myself however they do not know what it is. They did a compression test and still don’t know where it’s coming from. Has anyone had this problem or know what could be causing it? Also would it be worth just buying a new engine?