How Often Should the Fuel System Be Cleaned?

[VanLane]

Car fuel system cleaning should be performed every 30,000 to 40,000 kilometers. Vehicle owners can adjust the frequency based on driving environment, road conditions, mileage, and local fuel quality. If carbon deposits tend to form easily, the cleaning frequency may need to be increased or decreased accordingly. Specific details are as follows: 1. Symptoms indicating cleaning: If the engine exhibits unstable idling, fluctuating RPM, sluggish acceleration, or increased fuel consumption, it may indicate severe engine carbon buildup, suggesting the need for fuel system cleaning. 2. Reasons for cleaning: Fuel inherently contains impurities. Over time without cleaning, carbon deposits and sediments can accumulate in the pipelines from the fuel tank to the engine combustion chamber, clogging fuel injector needles and valve orifices. This affects the performance of precision components in the injection system, leading to poor fuel spray, inadequate atomization, or even complete failure to inject fuel. Consequently, the car may experience unstable idling, increased fuel consumption, weak acceleration, and difficulty starting.