Quick answer
Carbon cleaners use chemicals or specialized methods to break down and remove built-up carbon deposits from engine parts. This improves airflow, combustion, and overall performance.
Detailed answer
Carbon cleaners typically employ solvents or gentle abrasives to attack the residue that forms after fuel combustion. Deposits accumulate over time, especially when driving habits involve frequent short trips or low-quality fuel. By dissolving or loosening these stubborn carbon layers, cleaners restore smoother airflow and more complete combustion. That means reduced vibration, improved throttle response, and fewer emissions. Different brands or products may use varying formulas, but the underlying principle is the same: free up clogged parts so the engine operates closer to factory fresh. The process can be done via pour-in fuel additives, direct spray into intake manifolds, or professional decarbonising machines. After treatment, most drivers notice fewer misfires, less idle shakiness, and a perkier engine overall. It’s not a magic bullet, though—severe carbon issues might require mechanical intervention, such as physically scraping deposits or removing parts for thorough cleaning. Still, for routine maintenance, a carbon cleaner can go a long way in keeping your engine healthy.