thick black smoke in matiz car

Hello,

This sounds like you have an injector that is stuck open or the fuel pressure regulator diaphragm that is blown causing the fuel to be ingested by the engine causing the black smoke. Here are three guides to help us get to the bottom of the problem.

https://www.2carpros.com/articles/engine-black-smoke

and

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

and

https://www.2carpros.com/articles/how-to-test-a-fuel-injector


Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken