Totally black spark plugs Cosrsa Evolution

Hello colleagues, I work a lot with the injection but I have a problem with an Evolution Corsa and it is that the spark plugs leave them black fuel the case is that the car escapes and did not throw any fault code the sensor values ​​(MAP) are well and also lower the injectors to clean them and rebuine them and they are in good condition the question of mine is that another sensor would place the black spark plugs. Everything and follow me with the problem. Thank you I expect your prompt collaboration

Hello friend, control the temperature sensor within the parameters and that the canister valve is not open, tell us to discover, greetings.

All the sensors, but the most caused is that you have a problem with the oxygen sensor and the tenneath sensor, check them the most caused thing they are out of rank, they are two more common in the Corsa, and as Jal says the tennis sensor in or Chevrolet with Bosch system are the immediate guilty.

First go by the beginning and for the easiest, check your spark plug cables since with a cable that does not work correctly I would throw you a lot of smoke, sometimes the most complicated failures the most easy to solve, you tell us as follows.

I agree that it can be the ami oxygen sensor, something similar happened to me and the strange thing was that the Scaner did not mark it but when verifying online data that sensor was out of range replaced it and the car was normalized