white smoke can be either your car overheating, or smoke from an electrical issue
The white smoke under hood might be as a result of a mechanical problem. The reason may be because the timing belt is rubbing itself under something under the hood.
White smoke from under the cars hood can be leaking oil, brake fluid, transmission fluid. Most of the times it is a gasket went out.
Coolant leak.
Be sure that it's really white smoke. White smoke indicates coolant/water. Blue smoke is oil burning. Black is transmission or brake fluids.Next, is the smoke from the hood or the exhaust? If it's under the hood then maybe you spilled some oil on the engine during the refill. Out of the exhaust, hmmm........
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.
Sounds like you have a blown headgasket or cracked head. The smoke and smell is likely the oil leaking from your broken engine and burning off.
Not likely. Smoke from under the hood denotes a leak. Either your coolant or oil is leaking. White, thick smoke is oil. Could just be a gasket. Thinner hazy smoke is coolant. Check your hoses. Look for fluids/wet spots. Bad plugs can missfire, and make your exhaust smoke.
The car could be overheating or have a coolant leak.
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.
If it is white smoke you probably have something in the electrical system burning. If it is actually steam, your vehicle is overheating. Either way I wouldn't operate the vehicle until I knew what it was and had it corrected.
white smoke = Leaking water (anti-freeze) head gasket, bad water pump... cracked block... p blue smoke = burning oil i would suggest a leaking head gasket
Oil leaking onto the hot exhaust will cause white smoke. This may be because oil was spilt whilst topping up or one of your gaskets has blown a leak.