hi

have a 1995 millenia S at 140k miles.

timing belts/water pump have been changed about 1000 miles ago.
besides the smoke, the only remarkable issue is that it starts a bit
delayed (ignites about half a second).

the white smoke:

when i bought it, it would spit a big white cloud when starting. but then it would stop. i read in forums that many millenia S had that and that it should be fine in case it stops after half a minute. it did.

there are no apparent leaks: i have checked the oil cap, it looks fine (not milk-shaky). i do not have any coolant loss, it is still full since i bought it.
no leaks on the ground.

but it keeps smoking white. what could it be?

i have read forums and white smoke is always supposed to be an indicator of coolant loss or too much oil. but i ruled out both and it is still smoking.