valve seals....
The white smoke could be caused by coolant leaking into the combustion chamber, though a cracked head or bad gasket.
Cold start
What color is the smoke??? White=coolant leak Blue=oil leak Black=rich condition... too much fuel in system
White smoke at start up is due to moisture in the exhaust or on a diesel it can be normal due to the engine being cold.White smoke at start up is due to moisture in the exhaust or on a diesel it can be normal due to the engine being cold.
corsa 1.5 diesel lumpy at start up with white smoke from exhaust returning to normal after a couple of minuets
Blown head gasket or cracked head.
condensation
Check for trouble codes with a scan tool. I worked on a Saturn that had corrosion on the coolant temperature sensor connector which caused the computer to see too low of temperature and it added excessive fuel to the mix. The car barely ran, hads lots of smoke, the gauge on the dash was erratic and a coolant temperature sensor code was stored in the PCM.
possible blown head gasket. I don't get white smoke from my exhaust! is it from yours? If it is just after you start your car it is normal.
White smoke in the exhaust means water is being burned in the engine. A small puff of white smoke the first time you start a car in the morning is normal. Water condenses in the intake, and engine and when you firsts start the engine it burns off producing a puff of white smoke. It is nothing to concern yourself with unless the car is constantly blowing white smoke.
White smoke at startup, loss of anti freeze and milky oil indicates to me a bad head gasket.
Usually white smoke is the result of a cold engine. After the engine warms up, the white smoke should disappear. Faulty injector spray patterns are another common problem.