Got in my truck this morning and when I started it blew out white smoke out the exhaust. It went away after pulling out of the driveway. Any thoughts on what this could be? No engine service light yet.
Most vehicles will blow out a little white smoke, condensation really, during a cold start in the morning especially if it’s on the cooler side outside.(nothing to worry about)
Now if your talking about a cloud of white smoke your looking at either burning coolant or oil.
Did you notice a distinct smell of fuel on cold start? Did you notice an irregularly long crank time? Did you notice a stumbling idle at all?
Also, you should definitely check your oil and coolant levels to see if anything is irregularly dropping. Like MtMorris said, on a cool day or especially in winter you will have a lot of vapor come out of the exhaust due to condensation, but if it was 70 degrees you probably wouldn't really experience that too much.