What are the reasons for Weichai's high fuel consumption?

[BradyDella]

Weichai's high fuel consumption is due to the following reasons: Cleaning engine carbon deposits: Excessive engine carbon deposits are a significant cause, primarily due to the use of inappropriate fuel. It is recommended to add a certain amount of cleaning agent when refueling. If the effect is not noticeable, it indicates a substantial amount of carbon deposits in the engine. In such cases, the vehicle must be taken to a 4S shop for professional technicians to clean the engine's carbon deposits. Checking the oxygen sensor: As an internal control unit in the car, the oxygen sensor primarily monitors the fuel-air ratio in the engine. Once it is damaged, it will cause an imbalance in the engine's fuel-air ratio, leading to a sudden increase in fuel consumption. After the oxygen sensor is damaged, the vehicle will emit darker exhaust from the tailpipe during driving. At this point, the oxygen sensor should be replaced.