Engine Carbon Cleaning

Hydrogen engine carbon cleaning is a next-generation engine cleaning process. A specialist machine injects pure hydrogen directly into your vehicle's intake circuit while the engine runs at low revs. The hydrogen reacts chemically with the carbonaceous deposits — known as carbon build-up — on the valves, injectors, EGR valve, diesel particulate filter (DPF) and combustion chamber. These residues are gradually dissolved and expelled through the exhaust, with no need to dismantle any components.

A session lasts between 30 minutes and 2 hours depending on the level of engine fouling and engine capacity. Most vehicles are treated in under an hour at our garages in Roubaix and Béthune-Verquin. No aggressive chemicals are used: hydrogen is a natural gas, 100% clean, leaving no residue in the engine.

The results reported by our customers are significant: up to 10% fuel savings and a reduction in pollutant emissions of up to 40%. These gains are particularly noticeable on urban diesels that frequently run at low revs in areas such as Lille, Roubaix or Béthune, where short trips prevent the engine from reaching temperature and self-cleaning its components.

The main symptoms indicating that carbon cleaning is needed are: loss of power or hesitation on acceleration, unexplained increase in fuel consumption, blue or black exhaust smoke, an illuminated emissions warning light (engine or DPF light), difficulty starting from cold, or an unstable idle. If you recognise any of these signs, don't wait: carbon build-up accumulates progressively and can lead to far more costly breakdowns.

Hydrogen engine carbon cleaning is compatible with all engine types: petrol, diesel and hybrid. It is particularly recommended for diesel vehicles over 3 years old or with more than 80,000 km, which are very common in Hauts-de-France. Repeated urban driving around Lille, Roubaix and Béthune is one of the main causes of accelerated engine fouling. No dismantling, no chemicals, no risk to your engine: the hydrogen process is the gentlest and most effective method on the market.