Well I can say that I've had the valves adjusted at least once a year for the last 5 years, and just had them adjusted maybe 2 months ago.

The shop where I take it said they couldn't do much about the timing.

The air filter is good and clean, its an oil bath and gets changed out every oil change.

Yeah this car has always smoked on startup, smoked when it warmed up, and leaves off smoke on acceleration during. Greyish smoke.

Could this just be worn rings, the engine burning oil?

mark