B9S4 Inlet tract cleaning

NZB9

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Has anyone carried out inlet port cleaning on a B9S4 ? Guess it's engine out being a hot V?
 
The working principle of the internal combustion engine is based on the relationship between thermal energy, chemical energy, and mechanical energy. By burning hydrocarbon-based fuels, internal combustion engines generate large amounts of heat. So I dare not do this. I often seek the help of professional car services.