First, consider getting yourself a factory service manual for your vehicle as it often has the correct troubleshooting information for your vehicle. It really comes very handy when the car starts having problems.
What is the temp gauge reading? Does it overheat? Sweet smelling smoke out of the exhaust pipe is actually steam from water leaking into the cylinders and boiling off. You most likely have a blown head gasket. This is even more likely if the car has severely overheated due to a recent cooling system failure, i.e. broken water hose, bad water pump, hole in the radiator or heater core, etc. Also check for water in the oil, which shows up as a thick yellow goo (the technical term) on the dipstick or oil cap. A mechanic can perform a leakdown test to determine if there is a leak. From the symptoms you described, this one seems like a no-brainer. You should have the head gasket replaced IMMEDIATELY. A broken head gasket can cause more problems. Water leaking into the cylinders can break starters and flywheels. Water in the oil can degrade the oil's lubrication properties to the point the motor can seize. Once the head gasket is replaced, check for any other cooling system problems that cause overheating or you may blow the new gasket.
It could also be worn piston rings if the motor has high mileage
I don't know about a " No Brainer", There are a variety of possibilities. Is the smoke coming out the tailpipe?, is it coming off the engine itself, coming from the engine compartment? Clearly, more information is needed to answer this question.
Could be oil leaking out onto the manifold. Look for oil leaking out of the engine. You may need to replace the gasket under the cylinder cover (takes about 15 mins).
Additionally, smoke from the tailpipe will be of 3 distinct colors. White smoke is a coolant leak, blue smoke is from oil burning, and black smoke is an overly rich fuel mixture.First, you need to be more specific about the kind of smoke and where it's coming from.The usual smoke complaint is from the tailpipe, and it's easily diagnosed simply by the color of the smoke.Black smoke indicates too rich of a mixture, on older vehicles this was almost always due to a stuck choke.Blue smoke is from worn rings, the oil is going past them and burning in the cylinders.White smoke is from coolant in the cylinders, and is actually steam since coolant doesn't burn. This is usually caused by a blown head gasket.If it's coming off the engine (under the hood), you have some sort of leak such as coolant or oil onto something hot such as your exhaust manifold.
Blue smoke is burning oil.
The main cause of motorbike smoke is when the diesel is being burned and used in the engine. This smoke causes pollution to the environment.
Black smoke from an engine is caused by unburnt fuel.
blue smoke is oil. white smoke is water. black smoke is unburnt fuel
if it is white smoke engine need to rebuilt.
the engine is burning oil. blue smoke oil white smoke antifreeze black smoke excess fuel
to much of it can stop our system
what causes a 125cc motor to smoke and burn oil ? and is it fixable
If the smoke is black it could be caused by a faulty fuel pressure regulator which could be causing the engine to get too much fuel.
You probably have a little oil seeping into the combustion chamber while the engine is off. Once you start the engine, this oil is burned and causes the smoke you see.
what causes a 1.8t golf to jerk especially after the engine being hot