Why Your Diesel Engine Is Blowing Blue Smoke
If you're noticing diesel engine blue smoke puffing out of your exhaust, it's usually a pretty clear signal that your engine is burning oil. It's one of those sights that can make any driver's heart sink, especially if you're out on a job or hauling a heavy load. While black smoke is often about too much fuel and white smoke usually points to coolant or timing issues, blue is almost always about oil getting where it doesn't belong. ...