What is the function of a fuel filter?
2 Answers
The function of a fuel filter is to remove harmful particles and moisture from the engine fuel system to protect components such as the fuel pump, injectors, cylinder liners, and piston rings, thereby reducing wear and preventing blockages. The fuel filter eliminates solid contaminants like iron oxide and dust contained in the fuel, preventing fuel system blockages (especially in the injectors), reducing mechanical wear, ensuring stable engine operation, and improving reliability. There are three types of fuel filters: diesel filters, gasoline filters, and natural gas filters. Fuel filters are consumable items and require regular replacement and maintenance during vehicle use; otherwise, they will not provide adequate protection.
Last time during maintenance, I heard the technician talking about the fuel filter, which is like installing a water purifier for your car. It sits between the fuel tank and the engine, specifically designed to intercept dirt like rust, gum, and dust in the gasoline. My old car suffered from a clogged filter, causing uneven fuel supply and jerky acceleration when stepping on the gas. If this part fails, it can lead to sluggish acceleration and a sharp increase in fuel consumption at best, or even cause the fuel injectors to fail at worst! Especially now with inconsistent fuel quality, it's recommended to replace it every 20,000 to 30,000 kilometers, and choosing genuine OEM parts is the most reliable when replacing.
