What Causes a Sudden Doubling in Fuel Consumption?
1 Answers
The reasons for a sudden increase in fuel consumption are as follows: 1. Severe Engine Carbon Deposits: Carbon deposits typically form on the fuel injectors, spark plugs, throttle valve, and combustion chamber. When carbon buildup reaches a certain level, it can cause difficulties in ignition, stalling during neutral coasting or gear shifting, poor acceleration, and unstable idle speed, fluctuating between high and low. 2. Use of Low-Quality Fuel: Since low-quality fuel contains more impurities, it cannot be fully combusted. As a result, a significant portion of the gasoline is expelled from the vehicle. Additionally, the oxygen sensor may develop a layer of white or reddish-brown deposits on its surface, leading to misjudgment of exhaust oxygen content and transmission of incorrect data, ultimately affecting the control of the fuel injection ratio. 3. Excessive Vehicle Load: Some drivers tend to carry unnecessary items in their vehicles, which increases the weight. Others prefer to fill the fuel tank to its maximum capacity, which also adds to the vehicle's weight. A heavier load increases the pressure of the tires on the ground, leading to greater tire friction. 4. Use of High-Power Electrical Devices: Especially during idle, when the engine speed is low, the generator may not produce sufficient electricity. Using high-power electrical devices (such as air conditioning or high-power audio systems) can place additional strain on the engine and battery. Operating the vehicle under high load conditions can also result in increased fuel consumption.
