What does black smoke coming from the tailpipe mean?

Black smoke from the tailpipe is more common in older cars that do not have particulate filters. It usually appears when accelerating suddenly, although it can also be stable. The cause is usually that more fuel is being burned than it should be, so soot particles are released from the tailpipe. In this case it isn't recommended to use the car and you should take it to the repair shop.

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