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The engine is troit. Black carbon on the spark plugs and increased fuel consumption. A large amount of gasoline or too little air enriches the fuel mixture. The first sign is black smoke from the exhaust pipe and a black coating in the form of soot on the spark plugs. The malfunction can be in the fuel system, as well as in the sensors, electronics, etc. The video shows an approximate order of troubleshooting. White carbon on spark plugs • Attention! Lean fuel mixture. When... ????Friends! Your support is very important! You can help with your ruble here https://www.donationalerts.com/r/andsk64 ????All the tricks and secrets of Volkswagen and Audi repair ???? https://vk.ru/vagguru ????Telegram, where all the answers to questions ????https://t.me/+fMNhVhSfxycwZWYy Zen channel https://zen.yandex.ru/severny Mail: [email protected] If the video helped you and you want to help develop the channel Sberbank card 4276 1609 2679 5262 Andrey S. Subscribe! Like if the video was useful!