Do you mean 'idle' - like turned off? Or idling with motor running and gear in neutral? Either way, white smoke (not just white or clear steam) usually means burning or burnt oil. Check engine seals and manifold gaskets - or maybe worn piston rings.
Check the oil level, if you put to much oil in it can cause smoke. If that is the case then you have to drain some out untill you have the right level then let the truck idle untill it burns the oil out of the cylinders. Or you may have blown head gaskets
White smoke or white/grey smoke coming out of the tail pipe usually indicates a head gasket problem. Particularly if there is fluid coming out of the exhaust which will also cause your car to overheat because water is getting from your block into your motor... Black smoke usually indicates iol burning such as you rings are bad etc.... Answer It can also be an egr problem like leaking egr cooler just depends on the engine. but water entering the combustion chamber is the main reason.
Blue smoke? Black smoke? White smoke? from the tailpipe? from the engine? from the midpipe? at all times? only when it's first started? when under load or at idle? need a little more information here.....
sounds like you have head gasket problem if the exhaust smoke is white in colour then its engine coolant if its blue smoke then its burning oil you will need to get the engine pressure tested at a garage.
white smoke does not always mean oil. Where is the smoke coming from. Sometimes small pin holes in the water system can cause a white smoke or steam which appears to be smoke. If the engine is at idle that would be the only time you could see that type of hole until it gets bigger. Check for any loss of water/antifreeze in the vehicle.
Could have a head gasket problem. Need to know what color smoke is coming out of exhaust. If the smoke is white and has a sweet smell to it, you have a bad head gasket or a cracked head or both.
The typical signs for a blown head gasket is white exhaust coming from the tailpipe, gradual coolant loss, rough idle, temp gauge may fluctuate a bit while driving.
That is most likely antifreeze (coolant) leaking into your engine. It is not oil because it is blue smoke. This means you need to replace a gasket somewhere, most likely one of the head gaskets. If you keep driving it, it will begin to knock, and ultimately, your engine will seize or just pop.
Piston rings or Rich oil .
your not getting oil to the engine or its running low
water in the tailpipe is normal. if you are trying to get a bunch out, just drive quickly up a steep hill.
Sounds like you have a head gasket blown. Check the oil to see if you have any water in the oil. If not that is good. You can also remove your spark plugs one by one to see which gasket is blown, whether it be your drivers side or passenger side. Hope this helps.