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Just calmly tell us when it makes smoke. On startup, acceleration, foot off the gas slowing down. Need more info. I suspect you already checked your PCV valve. Dan
I wonder where the notion that the emissions system can cause smoking comes from? There is really nothing in that system that would cause your car to smoke. I also wonder why you do not think it would be valve guides/seals? Because you do not want it to be that?
I like the suggestion of a leak down test. You can determine if it is rings or valves that way. You almost certainly have an engine repair coming.