What are the main reasons for high engine fuel consumption?
1 Answers
Engine fuel consumption may be high due to excessive carbon deposits in the engine, damaged oxygen sensors, long overdue replacement of the "three filters," or issues with the engine's electronic control unit. Excessive carbon deposits in the engine: In the short term, excessive carbon buildup in the engine is mainly caused by the use of unsuitable fuel, which is more likely to occur after long-distance driving. Cleaning the carbon deposits can resolve the issue. Damaged oxygen sensor in the vehicle: As an internal control unit of the car, the oxygen sensor primarily monitors the fuel-air ratio in the engine. Once damaged, it can cause an imbalance in the fuel-air ratio, leading to a sudden increase in fuel consumption. In such cases, it is necessary to visit a 4S shop for repair or replacement. Long overdue replacement of the "three filters": During vehicle use, the three filters (oil filter, air filter, and fuel filter) must be replaced regularly. If not changed for a long time, they become dirty and affect performance, sending incorrect information to the engine control unit, resulting in incomplete fuel combustion and increased engine carbon deposits. Replacing the three filters can address this issue. Issues with the engine's electronic control unit: This can directly lead to difficulties in starting the vehicle, increased fuel consumption, poor power performance, and thick black exhaust emissions. Immediate inspection and repair at a 4S shop are required in such cases.
