White smoke coming from my tail pipe but it has brand new heads and all on 2001 Buick Century

It's a used car I got it for 800 but that's the only problem I have is the white smoke

Asked by for the 2001 Buick Century
3 answers
probably a faulty of incorrect installation on the head gasket.
Agree with gh, is it loosing coolant, overheating?
agree with gear head or poss crack in cyl head that was over looked