If you are making oil and its not losing coolant or bubbling in the radiator, its got to be fuel. Could be the fuel pump, but that would not explain running rough. I would suspect the needle and seat isn't working and the fuel bowl is running over or have you had the air cleaner off. Is the choke possibly stuck open? Or do you have an oil bath air cleaner that filled up with water? Whatever it is, it sounds like a very rich mixture.
