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Harmful carbon build-up

Carbon deposits look like soot and ash on your engine. Carbon is a by-product that occurs naturally in petrol, diesel and LP engines. Anything from stop-and-go driving, high Idle times and engine poor fuel may be the reason for carbon buildup.

Carbon builds up layer upon layer when fuel combusts in the engine cylinders, pistons, spark plags, EGR,turbo, catalitic canverter and DPF filters. This affects the smooth running of the engine and causes many other issues.

Carbon buildup occurs as the fuel burns in your car. Just like a log burning in a fire deposits soot and grime on the inside of a chimney, carbon deposits will begin to form in your new engine.


In petrol and diesel cars

Carbon problem occurs mainly in more modern petrol cars with engines from 2012 to the present.

Why is this happening? Aren’t these cars supposed to last longer? The reason carbon build-up is occurring is a new engine technology, referred to as direct injection technology. In these engines the fuel is transferred directly to the combustion chamber, skipping the air intake manifold and cylinder changes. This process creates a ‘lean’ mixture of fuel and air, about 40 parts of air to 1 part of gasoline or 40:1. The leaner mixture of fuel/air to burns better and more efficiently. The combustion chamber uses higher levels of heat than in a traditional gasoline engine, so it burns fuel better, so you get more mileage per gallon and reduced fuel emissions. Carbon buildups can prematurely DESTROY your engine. They can cause a loss in fuel economy, stalling, engine knocking and overheating. If your car is beginning to show these symptoms, you need to do more than switch to a better oil and premium fuel. You’ll need to get the deposits removed, and your engine cleaned.

Carbon problems in your gasoline engine
Carbon problems in your diesel engine

What causes carbon deposit buildup in diesel engines?

Carbon deposit buildup on diesel engine components such as piston heads, fuel injectors, intake valves, EGR and DPF filters is a bigger problem than it is for gasoline engines. There is a federal requirement that certain detergents be added to gasoline at the refinery itself, but there is no such mandate for adding detergents to diesel fuel. For this and many other reasons, diesel engines are more susceptible to carbon deposit buildup.

Most of the blame, however, has been assigned to the fact that the fuel spray from a diesel injector goes directly into the cylinder bypassing; for example, the back of the intake valve where deposits are likely to form. The increasing use of high pressure common rail fuel systems have also increased engine deposits. Other reasons for diesel engine carbon deposits are the use of low-quality fuel, short cold weather trips, excessive idling, infrequent oil changes and even dirty air filters.


You will notice some clear benefits that will greatly enhance your overall driving experience.




  • Smoother pick-up
  • Improved response
  • Greater fuel efficiency
  • Increased Horsepower up to 15%


  • Quieter engine
  • Restored torque
  • Prevents failed MOT tests
  • Reduces vehicle emissions by 70%


  • Fewer vibrations
  • Greater longevity
  • Reduces repair bills
  • Reduces breakdown probability


30 Minute Service – Immediate Results


How it works?


How does DCARBON clean carbon deposit in the engine?

The DCARBON clean unit runs on distilled water and electricity. The hydrogen and oxygen are produced using a mix of distilled water and electrolysis, this is then feed into the engine via the air intake/breather hose or air box.

The increased internal oxygen proportion improves combustion and at the same time the catalytic properties of hydrogen make it possible for the combustion carbon to be gradually broken down to clear the internal carbon deposits.

A strong electric current splits the water molecule (H2O) into its component atoms producing highly charged particles of hydrogen and oxygen, or oxy-hydrogen (HHO). The HHO is passed into the engine and burnt as the engine runs mixing the HHO with the fuel. As it passes through the induction system, combustion chamber, exhaust etc, the hydrogen reacts with the carbon deposits turning the carbon into hydrocarbons, this lifts the carbon deposits from the engine and the resulting gas exits the engine via the exhaust system.

Using no harsh chemicals the treatment returns your engine to a state of cleanliness. You regain power and performance, restore lost MPG and drastically cut emissions.

After treatment, there is no need to change engine oil or any type of filter.

The machine acts to restore the optimum performance of your engine. Using hydrogen technology, carbon deposits are removed from the inner workings of the engine, which naturally build up during the lifetime of the vehicle.

By removing unwanted carbon build up, further engine deterioration and damage can be avoided. This will keep your engine working more effectively and smoothly for longer, creating an enhanced driving experience.

The technology works with all types of vehicle’s – from motorbikes to planes if it has a combustion engine then it can be cleaned. Both petrol and diesel and LPG engines will show improvements irrespective of vehicle age and/or value.


Why is D'Carbon Cleaning Service Different?

Substances Used In Carbon Cleaning Process

Hydrogen and Oxygen Gas Generated from the electrolysis of Water.

Time For Cleaning Process

Opetation time for carbon cleaning approx 30 mins.

Environmental Effect

Complete combustion of Hydrogen and oxygen. No residual emissions from process Significant reduction of air pollution Significant reduction of emissions.

Additional Points

All gas is completely burnt during the process. Reduced environmental pollution. Significant reduction in Carbon deposits. No chemical ingredients – will not cause damage to engine parts. No residual chemical waste. Safe handling. No blocking of Catalytic Converter or Diesel Particulate Filter. Very easy automatic operation and walk-away operation No need to change engine oil.


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20-60 MINS

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30-90 MINS

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15-45 MINS

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Frequently asked questions

What is D'Carbon cleaning and its process??

Carbon Cleaning, removal of carbon deposits from internal combustion engines. Known also as De-carbonisation. It’s a process of injecting just the right amount of gas in the engines air intake. The correct parameters of the engine are typed in the app which calculates the correct amount of gas and time needed to get the best cleaning results to each and every engine. The gas outtake is brought to the engines air intake. The gas then reacts and dissolves the carbon build up inside the compression chamber and the exhaust manifold. This process does not contain any harmful, hazardous or aggressive chemicals, in fact the by-product is water vapor. Removing the carbon build up restores the engines efficiency to factory like functional conditions.

Can carbon cleaning be harmful to the engine?

The proper carbon cleaning process can not be harmful to the engine. D'Carbon cleaning can only extend the life of the internal combustion engine, as well as preventively affect newer engines for retaining the factory specifications during the time of the vehicle's exploitation, which would be said to be a new one after several hundred thousand miles, all of which thanks to the preventive de-carbonization of every 7-25,000 miles (According to our research, this interval is for diesel engines of about 7,000 miles, for gasoline engines about 15,000 miles, while for engine powered by LPG or CNG about 25,000 miles, the ideal mileage repeat the treatment) which protects the engine from excessive accumulation of carbon deposits, and thus prolongs the service life of the manufacturer's warranted specifications.

Is D'Carbon Gas Equally Effective With All Engines?

Yes, D'Carbon is efficient for all Internal Combustion engines, regardless of the type of fossil fuel such as diesel, gasoline, LPG. Based on the current availability of the central database, we can freely say that we have very successful results on most vehicles that can be found on US roads with various aggregates, which allows us to freely tell every customer that we have experience in working with a vehicle such as its and we are familiar with the effects that the carbon cleaning of the engines brings on a particular vehicle with a specific type of drive unit.

Is the carbon cleaning only for diesel engines or can be done on gasoline?

The decarbonisation process can also be done on diesel and gasoline engines (with or without gas or with a liquid natural gas drive - methane CNG).

Will the compression be reduced after the treatment?

NO. Carbon deposits can only interfere with proper sealing. Piston rings are designed so that pressure (compression) is pushed against the walls of the cylinders. Their removal can only lead to increased compression. If you feel that the engine itself is in such a bad condition that its compression is questionable, it is advisable to first service and overhaul certain parts and to perform the carbon cleaning process on the sound engine.

What happens to fuel consumption?

The efficiency of the engine over time (depending on the type of engine and driving style) slowly but surely decreases. The deposits directly affect the proper flow of air through the engine, as well as the correct injection of fuel for direct injection engines. Indirect effects on engine operation, starting with correct heat removal, increased friction, reduced compression volume, weaker valve breathing, and so on. it is difficult to pinpoint precisely. Feedback after the treatment, which is reflected in the first place in a significant reduction in harmful exhaust gases (CO, HC, NOx ...), by simple analysis clearly indicate the return of efficiency closer to the factory parameters. Reduction in consumption sounds like a logical consequence of higher engine efficiency, but there are many changing factors between them, starting from a driving style that is naturally more aggressive when a car, as customers themselves say, "is better off". Precise measurement of consumption is quite debatable, and when we add that it is even more difficult to repeat the conditions of two tests, we enter a vicious circle known to everyone who tried to accurately measure consumption.

Will treatment negatively affect the nozzles?

It will not. For example, for the engines with direct fuel injection the gas clears the deposits at the head of the nozzle, which will then affect the injection positively. The computer will again get more precise values and allow the system to function so that the efficiency of the engine can also lead to a reduction in fuel consumption, because roughly speaking, it does not waste fuel.

Can carbon cleaning be done on vehicles with mechanical diesel pumps?

It can. Considering that the high-pressure mechanical pumps are quite old and have traveled a lot of miles, it's even advisable to do a treatment to get the engine refreshed at least in terms of releasing from the deposits that have accumulated on the exhaust branch for years, valve seats and other parts of the engine.

Will the catalytic converter and DPF be more clogged after the treatment?

D'Carbon in contact with soot deposits (carbon) stimulates the reaction to convert carbon to hydrocarbons, which happens with particles that have also accumulated in the DPF itself. Gas can not be kept in the DPF, as they are no longer particles. As a by-product after the combustion of gas in the compression area itself, heated water vapors emitted, which increases the humidity of the exhaust gases, resulting in the dissolution of soot, gassing and carbon deposits in the exhaust section, the exhaust branch and peripheries such as EGR valve, catalyst, DP filter and other parts of the exhaust system, such as differential pressure sensors, lamellar probes.

Is it necessary to change filters or do the service after the treatment?

It's not. The moment at which the carbon cleaning process is carried out is in no way related to the service interval of the vehicle so that the carbon cleaning of the engines can be done immediately after service or just before it. After the process, it is not necessary to do any type of service: replacement of filters and oil or other parts because the hydrocarbon during their movement did not contaminate.

Do I need to do something after the treatment?

After the treatment, it is necessary for the car to be taken out on the open road and 10-12 km to emit the dissolved elements of the carbon deposits from the exhaust system, turbine, EGR valves, including the exhaust branch , catalytic converter, middle and rear crucibles, and DPF/FAP filters for newer diesel engines. It is recommended that the driving of these 10-12km be in one working cycle in order for the engine to achieve operating temperature and achieve optimum sealing and efficient combustion, but in order to completely eliminate the dissolved-drawn gears, carbon black and carbon deposits from all elements of the exhaust the block and thus the compression part of the engine and the exhaust block were significantly cleaner after treatment and driving. It is recommended that the engine at a speed of 10-12km be at a higher level of rotation, for diesel engines around 3000rpm, and for gasoline around 4500rpm. It is also our recommendation that at some reasonable time after the de-carbonization process 300-500 km / h, the gasoline engine replacement of the spark plug in order to make the combustion be of the highest quality.

Can the treatment be repeated and how often should the procedure be repeated?

The decarbonization process does not damage the engine. On the contrary! Bearing in mind that this procedure removes the soot from the car engine (which will accumulate over time), the decision on the interval of repetition of this procedure is left to the owner of the vehicle only. Depending on the mileage, as well as the amount of accumulated soot, the procedure can be repeated shortly after the first time, in order to achieve a more effective effect, while on the other hand, the procedure can be done one or more never to repeat. However, as we have been convinced ourselves of the results of this process, according to our research, this interval is for diesel engines of about 10,000 km, for gasoline engines of about 20,000 km, while for engine powered by TNG or CNG about 30,000 km ideal mileage that the treatment be repeated. Depending on how much soot deposits were in the engine, some have decided to do another treatment shortly after the first one, and then they noticed a significant difference. On the other hand, you can plan for decarbonisation (for example) once a year, thus continuously releasing the sediment from the engine.

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Trusted by over 3,000 clients

I'm very happy with DCARBON service, they cleaned my DPF, DOC, SCR filters and after did Engine Carbon cleaning with hydrogen. My Cascadia flying now, power get back and MPG much better now. Thank you Peter I'll come back in about 6 months for Carbon cleaning again.
My BMW X5 now quieter no smoke and can feel different in acceleration, seems to have helped on fuel consumption as well as engine no longer struggling.
I had problems with passing a smoke test on my Jetta. This guys cleaned my DPF and catalytic and did Carbon cleaning, I finally passed smoke test and my car runs like new. Definitely recommend.
I was a little sceptical about this Carbon cleaning service but I glad I did, my Sierra with 113k miles have more power, better fuel mileage about 15%, turbo responding like new. I'm going to come back in 6 months. Thank you Dcarbon.
I have Nissan GTR all services I do in time. I find online good reviews about dCarbon engine carbon after few hours off research I decide I can try it. This guys so fast the cleaning took about 30 minute But result shocked me, from the first touch of accelerater pedal I filed big difference. You guys just should try this service, you'll be very happy! Thank you DCARBON to Dtox my engine.

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