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Motor system cleaning

Regular and professional motor system cleaning effectively prevents engine problems and the resulting high repair costs.

You probably know this from home: Your chimney has to be cleaned by the chimney sweep at regular intervals because soot is produced during combustion. But who does this for your vehicle? Here, too, residues are produced in the engine during every combustion process, fouling highly sensitive components such as injection nozzles, injectors and valves - a problem that is exacerbated by predominantly short-distance driving, frequent stop-and-go, poor fuel quality or low-speed driving.

To make matters worse, exhaust gas recirculation systems feed some of the burned exhaust gases back into the combustion chamber. These exhaust gases also form deposits that become so hard over time that they can no longer be removed.

Engine indicator light

Why motor system cleaning is so important

If the engine system is cleaned too infrequently, this can have negative effects on the vehicle. Possible consequences are:

  • a poorly starting engine
  • jerking of the vehicle
  • loss of power
  • bad exhaust gas values
  • rough engine running or misfiring
  • increased fuel consumption
  • lighting up of the engine control lamp

If any of these problems sound familiar, deposits in the fuel or intake system are often the cause.

Our tip

Get rid of the dirt before it gets really expensive!


Cleaning instead of repair

With a professional cleaning of the engine interior, we can quickly remedy the situation and save you from costly repairs or even engine damage!


Precaution instead of aftercare

Better yet, prevent problems from occurring in the first place and treat your engine to a preventive cleaning at every inspection! That way, your car will run smoothly for a long time and retain its full performance.

Find a LIQUI MOLY service workshop near you

You should definitely have your engine cleaned by a professional! Otherwise you run the risk of permanently damaging sensitive components. We will be happy to advise you at your LIQUI MOLY service workshop and find the right package for you.

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Engine system cleaning workshop

Advantages of motor system cleaning

  • noticeably improved engine running due to optimal combustion
  • restoration of the original performance
  • lower fuel consumption
  • optimized, constant exhaust emission values before main and exhaust emission tests
  • avoidance of costly repairs
  • longer engine life
  • maximum driving pleasure
Close-up of a butterfly valve before and after cleaning
Close-up of a butterfly valve (left: before cleaning, right: after cleaning)

Our motor cleaning packages

Fuel system cleaning

  • Cleans and maintains nozzles, injection and intake valves
  • Combustion residues are thoroughly removed

Intake system cleaning

  • Cleans and maintains the complete intake and throttle body area
  • Efficiently removes contamination

Our tip: Combination package

  • Professional cleaning of fuel and intake system for best results
  • Particularly recommended before the main and exhaust emission test
Close-up of a common rail injector before and after cleaning
Close-up view of a common rail injector (left: before cleaning, right: after cleaning)
Inlet valves
Close up of the inlet valves (left: before cleaning, right: after cleaning)