White smoke indicates coolant burning, usually a blown head gasket. Blue smoke indicates it is burning oil, usually piston rings. Black smoke is too much fuel and can be anything to a leaky injector to a dirty air filter.
If there is no overheating or loss of coolant, most likely it is due to condensation in the exhaust system (pretty normal in cool or rainy weather).
1) Your engine is overheating and the coolant is boiling. Or 2) Exhaust is leaking into the coolant, probably through a bad head gasket or cracked head.
Loosing Coolant, coolant in the oil, a sweet smelling exhaust, low compression, overheating, and possibly a miss.
check your coolant levels & if car overheating, might well be the cylinder head gasket is away.
Several possibilities - from easiest to most expensive: Faulty or inoperable radiator cooling fan - causing overheating. Faulty thermostat - causing overheating. Water pump failure - causing overheating. Blown head gasket - allowing exhaust gasses to escape into the cooling system and expelling the coolant.
Is white smoke coming out of the exhaust? Is the oil milky? If so then you could have a blown head gasket. You can also check by getting an exhaust gas checker at Autozone to see if there is exhaust in your coolant. HTH.
White smoke from the exhaust especially at startup. Coolant mixed with the oil. A white foamy substance on the underside of the oil fill cap. Loss of coolant with no apparent leak. Engine overheating with possible miss.
Overheating. Loosing coolant with no apparent leak. White smoke with a sweet smell from the exhaust. Coolant in the oil. A foamy substance on the underside of the oil cap. Air bubbles escaping from the radiator. Engine missing on one or more cylinders. Loss of power.
Check your exhaust while running, smells sweet and blueish smoke. Overheating, loss of coolant. Do a compression check.
You should the head gasket. If you go to Autozone, they have a tool that can check for exhaust gas in the coolant which may tell you if you have blown head gasket. Also, check your oil to see if it is milky or if you are blowing white smoke from the exhaust pipes. HTH
It is possible but highly unlikely. If it were leaking oil from a blown head gasket you would have lots of other symptoms such as overheating, coolant mixed with the oil, white smoke from the exhaust, and loss of coolant with no apparent leak.
If you have odors coming from the engine area you probably have something leaking be it oil, engine coolant or exhaust. If the engine is overheating, a radiator flush may or may not help because there are several reasons why it could be overheating. Take it to a trusted mechanic for diagnoses.