Why has the car's fuel consumption suddenly increased?
1 Answers
The reasons for a sudden increase in fuel consumption are as follows: 1. Severe engine carbon deposits: Carbon deposits usually form on the fuel injector, spark plug, throttle valve, and combustion chamber. When carbon deposits reach a certain level, issues such as difficulty starting, stalling during neutral coasting or gear shifting, weak acceleration, and unstable idle speed (fluctuating high and low) may occur. 2. Use of low-quality fuel: Since low-quality fuel contains more impurities and cannot be fully burned, most of the gasoline is expelled from the vehicle. At the same time, a layer of white or reddish-brown substance forms on the surface of the oxygen sensor, leading to misjudgment of exhaust oxygen content measurement and transmission of incorrect data, ultimately resulting in poor control of the fuel injection ratio. 3. Excessive vehicle load: Some car owners tend to place unnecessary items in the vehicle, which increases the weight. Others prefer to fill the fuel tank to the brim, which also adds to the vehicle's weight. The greater the vehicle load, the higher the pressure on the tires against the ground, and the greater the tire friction. 4. Use of high-power electrical equipment in the vehicle: Especially during idle speed, when the engine speed is low, the generator produces insufficient electricity. Using high-power electrical equipment (such as air conditioning cooling or high-power audio systems) in the vehicle will increase the burden on the engine and battery. Operating the vehicle under high load conditions will also lead to increased fuel consumption.
