The HHO carbon cleaning machines were designed and built specifically to provide powerful decarbonization on large diesel engines. Through the use of advanced HHO generators, carbon cleaning from the cylinders, turbo chargers and exhaust systems is performed with great efficiency. The refined steel outer casing layer which is covered in industrial components enables the repurposed HHO machines operate within harsh diesel workshop conditions. These machines provide complete protection to the diesel engines from overheating during extended operation. These machines are greatly suited for fleet maintenance centers. While safeguarding the strict emission systems windows, excessive downtime is greatly reduced and fuel cost is consistently improved, making the machines ideal for commercial engines.