Fuel Tank Close To Empty - Why We Shouldn't Do That?
Do you always like to keep the fuel tank close to empty before each refueling? Well, you may have a good reason to do that, but you should be aware of the potential risks which may damage your car.
One of the main risks is that it may damage the fuel pump. Heat Dissipation Fuel in the tank acts as a coolant for the fuel pump. When the fuel level is low, there's less fuel available to dissipate the heat generated by the pump. This can lead to the fuel pump overheating, which accelerates wear and tear on its components. Over time, this can lead to decreased efficiency and eventual failure of the fuel pump.
Lubrication Fuel also acts as a lubricant for the moving parts within the fuel pump. When the tank is empty, the fuel pump may run dry or have inadequate fuel supply, causing increased friction between its components. This can result in accelerated wear and potential damage to the pump's internal parts, including the motor, impeller, and bearings.
Moreover, cavitation will occur when air bubbles form within the fuel pump due to low fuel levels or insufficient fuel supply. These air bubbles can collapse violently as they move through the pump, causing damage to its internal surfaces. Cavitation can lead to erosion of the pump's components, including the impeller blades and housing, which can ultimately reduce the pump's efficiency and lifespan.
Sediment and debris often accumulate at the bottom of the fuel tank over time. When the fuel level is low, there's a greater risk of drawing these contaminants into the fuel pump. The presence of sediment can cause abrasion and damage to the pump's internal components, leading to decreased performance and potential failure.
Apart from the fuel pump damage, the likelihood of condensation forming inside the tank will increase as well. When the fuel tank is empty or nearly empty, there's more air space inside. During temperature fluctuations, particularly when the temperature drops, moisture from the air can condense on the inner walls of the tank. Water is corrosive, and when it accumulates in the fuel tank, it can corrode metal surfaces, such as the inner walls of the tank and fuel lines. Corrosion can weaken these components over time, leading to leaks and potentially costly repairs. Also, water in the fuel tank can mix with the fuel, leading to fuel contamination. This can affect the combustion process in the engine, resulting in poor engine performance, rough idling, and potential engine stalling. Additionally, water in the fuel can cause damage to fuel injectors, leading to fuel system malfunctions. Moreover, water in the fuel tank provides an ideal environment for microbial growth, such as bacteria and algae. These microorganisms can thrive in the presence of water and organic material such as fuel, and can form slimy deposits inside the fuel tank and fuel lines. This can clog fuel filters and injectors, leading to engine hesitation and reduced fuel efficiency.
So, keeping the fuel tank empty for a long time will increase the risk of damage to your car. To avoid these issues and maintain the longevity of the fuel pump, it's advisable to keep the fuel tank at least a quarter full and adhere to regular maintenance intervals recommended by the vehicle manufacturer.