How often does the intake system need cleaning?
2 Answers
The intake system generally requires cleaning approximately every 20,000 kilometers. The specific cleaning interval can be determined based on the driving environment and the control method of the electronic fuel injection engine. If the local air environment is good, the cleaning interval can be appropriately extended. If the local environment is harsh (with inhalable particles), then cleaning should be appropriately advanced. The intake system consists of components such as the air filter, air flow meter, intake pressure sensor, throttle body, additional air valve, idle control valve, resonance chamber, power chamber, and intake manifold. The main function of the intake system is to provide the engine with clean, dry, sufficient, and stable air to meet the engine's needs, preventing impurities and large particulate dust in the air from entering the engine combustion chamber and causing abnormal engine wear. Another important function is noise reduction.
There's no fixed schedule for cleaning the intake system; it depends on your driving habits and vehicle condition. Based on my years of driving experience, I recommend checking it every 20,000 kilometers. If you frequently drive on dirt roads or in heavy city traffic where there's more dust in the air, leading to easier carbon buildup, you might need to clean it as early as 15,000 kilometers. Also, clean it when obvious symptoms appear, such as sluggish acceleration or a sudden increase in fuel consumption—these signs indicate a clogged intake affecting the engine's breathing. For a simple cleaning, you can do it yourself using a cleaner spray on the throttle body, but for precise areas like the manifold, it's better to rely on professional technicians. Don't delay too long, as it may lead to higher cleaning costs or even engine damage. Regular maintenance can enhance power performance and save fuel expenses, making it worthwhile in the long run.
