Mitsubishi Repair: 97 Mits Montero LS oil leak problem, valve seals, oil leaks

Question
I have a 97 Mits Montero LS 137,*** miles on it. For some reason I have a oil leak and can't find it. I have also replaced the valve cover gaskets and still oil leaks out some how. Now the car seems to puff exhaust smoke out the back when you first start it and when its at idle. Pls help Thanks.

Answer
My first guess would be valve seals and keys. Second guess would be head gasket, But I'm assuming that your not overheating so that would leave me to belive it's valve seals and keys.

It could also be(Hope not) Be leaking at the Trans case where the engine and trany mount and it could be leaking into the trany. Check you trany fluid.

Also it could be a internal leak and you plugs are just burning them off. Please let me know if this helps. I would start with valve seals and keys.