Black and blue smoke are more common in diesel engines, and there's a dedicated article explaining why it occurs. You should ...

Here's how to "read" tailpipe smoke signals to help you determine whether they're the byproduct of a harmless atmospheric phenomenon or the first sign of a major mechanical failure. Thick blue or ...

Exhaust smoke typically appears in three colors: black, blue, and white. Here's what each color signifies. Here's What Causes Black Exhaust Smoke Black smoke from your exhaust indicates an issue ...