If it is (when engine is warmed up) white smoke sweet smelling it is coolant burning.
If it is a blueish white smoke it is engine oil burning.
From your description its showing signs of a major engine issue where coolant is entering the combustion camber.
Usually, a blown head gasket will consume coolant over time and engine operating temperatures will increase.
Wednesday, January 15th, 2014 AT 7:21 PM