The car could be overheating or have a coolant leak.
Probably a coolant leak.
Yes
built up heat coming out engine breather tubes on the motor!
Where is the smoke coming from? If it's the engine you may have bad valve covers or something is burning up from under the hood. Check the source and check it fast. If it comes from the tailpipe you may have a catalytic converter problem.
White or gray smoke coming out from under the hood of a car could be the result of a small water leak spraying water on a hot engine. A running engine is naturally hot enough to create steam when water hits it.
You probably have an oil leak from your motor on to your exhaust system.
If you have blue-gray smoke coming out of the exhaust, then you have worn or damaged piston rings, or valve seals. If the smoke is excessive, a major engine overhaul will be necessary. If no blue-gray smoke is coming out of the exhaust, then look for a worn/damaged oil pan gasket, or a loose oil pan plug, or a loose oil filter. In either of these cases, you should see oil spots on the ground under the car.
the reason why smoke is coming from your engine is because it is on fire And the water is from the ac ----------------------------------------------------------------------------------------------- Assuming that the engine is running and warmed up , it sounds like you have a leak in a heater hose or radiator hose , or somewhere else there is a leak in the engine coolant system
Coolant leak.
You have a blown head gasket
add water or anti-freeze coolant
The emanation from smoke from the under the hood should be treated as a possible emergency. The vehicle should immediately pull over to safe area. Smoke causes can range from a minor oil spill on hot engine/exhaust surfaces to major cooling systems and to highest severity engine fires.