Intake decarbonisation
diesel engines
Why it matters
The correct ratio of intake air to fuel in diesel engines is essential for maximum power. Deposits building up in the intake manifold increase exhaust emissions, increase fuel consumption and reduce engine power.
If your vehicle has higher fuel consumption, a poorer response to the accelerator pedal, you feel a loss of power, the idle speed is unstable, the engine is harder to start or it stalls for no apparent reason, cleaning the intake is the first thing we recommend. For smooth engine operation we recommend repeating intake decarbonisation every 15,000 km together with an engine oil change.
BG Diesel ISC, applied into the intake with dedicated equipment, releases even the most stubborn deposits from the intake of diesel engines. It leaves the intake and the other components clean and free of deposits. After intake decarbonisation you should notice lower fuel consumption, reduced emissions and restored engine power. At the same time you extend the life of your engine.
Preventive vehicle maintenance
Treat your vehicle to BG products regularly and avoid unnecessary, costly repairs later on.
Request an appointmentWhen to act
Based on our experience, we recommend decarbonisation in cases where:
Deposits in the intake tract of diesel engines form continuously — mainly through the combination of exhaust gases fed back through the EGR valve and oil vapours from the crankcase ventilation. That is why we recommend repeating intake decarbonisation every 15,000 km together with an engine oil change.
A clogged intake manifold and EGR valve restrict the amount of air drawn in. The engine then runs with the wrong air-to-fuel ratio, which shows up as unstable idle speed, harder starting and, in extreme cases, the engine stalling for no apparent reason.
Deposits in the intake reduce the airflow into the cylinders. The engine loses power, responds worse to the accelerator pedal, and fuel consumption and smoke both increase.
Products used
BG Diesel Induction System Cleaner
A chemical product applied directly into the intake with dedicated equipment, releasing even the most stubborn deposits from the intake of diesel engines. It leaves the intake manifold, EGR valve and other components clean and free of deposits.
Finishes the cleaning of the diesel fuel system — injectors, fuel filter and combustion chamber. It restores injection system performance and reduces smoke.
How it works
BG intake decarbonisation for diesel engines keeps your engine in perfect condition for as long as possible.
BG Diesel Fuel System Performance Restoration is added to a full fuel tank.
The connector to the EGR valve is disconnected.
BG Diesel ISC is filled into the BG Diesel Induction Service Set, the unit used for intake decarbonisation.
The intake hose is disconnected.
The BG Diesel Induction Service Set is connected to the intake.
The engine runs at 1,000 – 1,200 rpm until the entire charge in the BG Diesel Induction Service Set is used up.
After the decarbonisation process the engine is switched off and the unit disconnected.
The connector to the EGR valve is reconnected.
The engine is started again and left running at 1,500 – 2,000 rpm for 15 minutes so that all components of BG Diesel ISC evaporate.
The engine oil and filter are replaced (not included in the price of this service — we recommend choosing the BG engine performance restoration service for diesel engines).
Fault codes are cleared from the engine control unit.
Pricing
Pricing valid from 1 June 2025
| Service option | What's included | Price |
|---|---|---|
| Vehicle with one intake branch |
BG intake decarbonisation of a diesel engine for vehicles with one intake branch. The price includes all work related to the BG decarbonisation of the engine intake. After the service an engine oil and filter change is required. We recommend combining it with the BG engine performance restoration service for diesel engines.
|
182 €incl. VAT |
| Vehicle with two intake branches |
BG intake decarbonisation of a diesel engine for vehicles with two intake branches. The price includes all work related to the BG decarbonisation of the engine intake. After the service an engine oil and filter change is required. We recommend combining it with the BG engine performance restoration service for diesel engines.
|
312 €incl. VAT |
Request an appointment No obligation — we'll get back to you with the earliest available slot for your vehicle.
EGR port before and after the service.
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