Good thread guys. I am glad I found this forum because now I am having the same problems. Let me give you some history. I got a 2004 Aveo. Father-in-law gave us the car because he just didn't want it anymore. Who am I to turn down something free especially when its a car? After accepting his generous act, I started looking over the car and noticed that he hadn't done a darn thing to this car. For you northerners, he neglected the car and didn't do any preventitive maintenance.
The common problem...Valve cover gasket..Oil in the spark plug holes. Spark plugs soaked in oil and wires wet from the oil.
After pulling the spark plugs, I immediately diagnosed the problem and replaced the valve cover gasket. I am no fool, I also replaced the spark plugs and carefully inspected the car for other problems. I was thinking about replacing the wires but thought I would wait to see how the plugs would perform.
Everything was good until I saw smoke from the exhaust. Smoke? I carefully checked the plugs holes to see if i had somehow installed the gasket wrong. Everything looked good. Why the smoke? Do think the excess oil in the cylinder is being burned off? Or maybe some oil got past the exhaust valve in the head. What do you think?