Injector cleaning or carbon clean

Peugeot 106 1999 Model I want to clean the injection of my single point injection car.

& nbsp; they don't recommend carbon clean to those with more kms & nbsp;

The cost of carbon clean is more costly than injector cleaner liquids. brands you prefer.

my car was throwing black smoke, let us try to add diesel additives, we said, we took the würth brand a week has passed. I said thank you. Can I get some repair in your repair? or should I buy a syringe of 800-850 TL?