Random white smoke from 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. A problem with antifreeze might also be causing white smoke to come from the exhaust. This will cause white smoke , along with the idle issue.

The most noticeable symptom of internal coolant leakage is when the white smoke is billowing out of the exhaust pipe and leaves a sweet odor in the air. I have been experiencing random bouts of white smoke coming out of my exhaust. It has a oily smell to it, but usually lasts a few minutes then goes away.

It happened a few months ago, when I was going downhill and not accelerating, I saw huge plumes of white smoke coming out the back. I got back on the gas and it went away after seconds or so. OP, ever figure out the problem? Black smoke is carbon or unburnt fuel and blue smoke is from oil. Condensation build up, if you.

White smoke can be nothing to be concerned about if it’s thin, like vapor. The black smoke may show there is a return fuel line which is obstructed. Technically, the white color is caused by the light-scattering characteristics of the re-condensed droplets of fuel (un-burned or partially burned) larger than one micron. You may commonly see white smoke coming from the exhaust on cooler days upon starting. Symptoms and pictures of your problem are a good idea.

Went to start the truck and a ton of white smoke came out the exhaust for about seconds. Then hours later took the truck on the turnpike. Engine was in normal temp.

If white smoke starts to escape immediately, water begins to drip as the car warms up, and your exhaust smells of antifreeze, there is a coolant leak inside your engine. Perform two final checks by opening your radiator (when cool) and look for oil floating on the water, and pulling your dipstick and looking for a milky emulsion (antifreeze mixed with the oil) on it. Lots of white exhaust smoke on start up is usually a sign of a head gasket problem. If the leak is very small, or leaking into adjacent cylinders, there may not be much smoke upon starting up, and yet still enough coolant may be pulled into the combustion chamber(s) to produce a strong sweetish exhaust smell. A small amount of water is produced as a normal bi product of the combustion process and until the exhaust system warms up the water evaporates and can be seen as steam.

But excessive white smoke likely means coolant is leaking into the engine combustion chambers. As the engine warms up and the condensation dissipates the white exhaust smoke (steam) is no longer seen. Head gasket failure can cause white smoke. This is generally steam caused by condensation.

Ohv engines are usually well marked with ohv on the front engine cover. The white smoke from the exhaust means that the engine oil is leaking into the combustion chamber where the petrol burns. Hence the engine is now burning engine oil along with petrol. The burning engine oil produces a white smoke. If it is below degrees Fahrenheit, then white smoke is perfectly normal until the engine warms up.

If it continues after the engine is warm, then there is a source of excess water somewhere in the engine.