How do i fix my car
This is a broad question which may have different answers depending on what is wrong with the car. Could you tell me about what issues you are seeing?
lots of black smoke is coming out of the exhaust
Black smoke from the exhaust of an engine is typically caused by the fuel air mixture being burned being too rich. This means that excess fuel is being pumped into the cylinders before being burned. This can be caused by a number of issues, such as bad fuel injectors, and is quite vehicle specific.
Is it a concerning issue?