of course it emits "smoke" you mean exhaust? it has to go somewhere, if it's a propeller plane it has an exhaust just like car, if it's a turbine, it has an exhaust outlet, if it's a jet engine, the exhaust is self explanatory
Many reasons; check your oil.
Injectors, timing, low cylinder pressure.
coke probably does emit gases, but you dont see them cause they are clear, but it doesnt emit smoke, which i am guessing would refer to carbon dioxide, because burning coke does not create it as one of its products. i am not sure what coke has in it exactly, so if someone can explain better then please do.
They do not! Most gases do not emit radiation.
No, it is not.
the valve guides could be worn out The carburetor is running fuel rich and needs adjustment. If it were valve guides or rings the smoke would be blue
No who, but what. All internal combustion engines emit exhaust fumes.
Hot gases of any kind emit electromagnetic radiation.
White smoke occurs when there is moisture evaporating from the exhaust system from sitting overnight or in cold weather. Your car may also emit white smoke if there is a head gasket leak and the car is burning coolant. In this case, you will need to see a technician immediately.
Smoke can function as both a noun and a verb. As a noun, it refers to the visible vapor and gases given off by a burning or smoldering substance. As a verb, it means to emit smoke or to inhale and exhale cigarette or pipe tobacco.
Many of them do
fumaroles