White smoke on a car

Why would a car blow white smoke? What causes white smoke from car exhaust? Why is white smoke coming from my exhaust? One cause of white smoke from the exhaust might be the engine leaking coolant.

If the engine leaks coolant, it will be burned by the heat of the engine and then come out as smoke from the exhaust. One reason for white smoke is very common and completely harmless. One of two conditions is responsible for white smoke blowing out of your exhaust. First is normal condition (so you don’t have to panic) and the second is a not so normal condition which should be fixed as soon as possible. This is nothing but steam caused due to condensation.

As the engine warms up after a few minutes, this white smoke will not be reduced because condensation is dissipated. The most common reason for white smoke from the exhaust pipe that is condensed in the exhaust pipe. Steam is emitted by condensation in exhaust pipe which is seen at exhaust emission. The white smoke is the result of normal condensation which builds up inside the exhaust system. Again, adding coolant or antifreeze to your car's cooling system will keep your car from overheating for as long as you remember to keep feeding the reservoir, but the wise move is to have it checked out as soon as possible.

White smoke can be a big problem or not, depending on the thickness. If the white smoke coming out is in volumes, you should stop the car immediately and call for emergency roadside assistance, including a tow truck. Heavy volume of white smoke means the engine is dangerously overheating.

Regrettably, you may be faced with having to purchase a new engine. When you start the car , the engine heats up, and these water droplets are emitted as white smoke. A damaged head gasket or cracked engine block leak coolant. How to Diagnose a Car with White Smoke from Exhaust. There are several ways to diagnose a car with white smoke.

I work as a mechanic, and this is the way I would diagnose this issue. As a person is less likely to notice the color of smoke coming from their car 's tail pipe, another common symptom of this problem is overheating. However, some ways are easier and faster than others. You may commonly see white smoke coming from the exhaust on cooler days upon starting. The oil filler cap in almost all the engines releases a faint whiff of smoke , which is a residue of the burnt fuel inside the engine.

Older engines produce more hot spots, which make the car smoking under hood but not overheating. Some white exhaust smoke is normal, especially when you first start the car. Condensation can turn to vapor, providing what looks like white exhaust. But excessive white smoke likely means coolant is leaking into the engine combustion chambers. A car engine can smoke for several reasons.

This could be caused by valve stem seals, worn rings, a plugged PCV valve, not changing the oil for extended periods, too high of an oil level or transmission fluid being sucked into the intake manifold from a bad vacuum modulator. If your car has a glow plug, the best way you should do is replacing it with a new one.