What is the function of car fuel filter?
Car fuel filter is an important part in the vehicle's fuel system.
The effect of car fuel filter
The fuel filter has the function of removing dirt, residue or impurities in the gasoline before the gasoline goes through the fuel pump, fuel injector to enter the engine combustion chamber.
Removing all impurities makes the fuel combustion process easier and more efficient, and also helps prolong the life of internal engine parts.

The car's fuel filter is a part of the vehicle's operating system, which has the function of filtering out dirt and impurities in the gasoline that exist in the air before entering the combustion chamber. Because those impurities are the cause of damage, causing the engine system to become clogged and run unstable. Over time, it can reduce the life of the parts and have to be replaced, costing a lot of money.
In addition, filtering clean gasoline also helps save fuel effectively, burn all fuel, avoid the phenomenon of gasoline not being burned completely and escaping through the exhaust pipe as black smoke.
As a part that filters dirt and impurities, after a period of use, the car's fuel filter will be covered with dust and gradually corroded. Leaving it for a long time will reduce its performance, causing the filtering process to slow down.
Worse still, the blockage prevents the engine from receiving enough fuel to ensure vehicle operation, which leads to phenomena such as stalling, difficulty starting, or jerking when moving.
Therefore, drivers need to regularly clean and change oil filters on schedule.
When to change car fuel filter?
According to experts, the most suitable time to change the oil filter is after 2 years of operation or after traveling 40,000 km.
However, in reality, with the current road and air conditions on most roads in Vietnam, car owners may have to consider replacing the fuel filter sooner. Therefore, car owners can rely on the following phenomena of the car:
Difficult to start and weak, vibrates when moving
The fuel filter is clogged with dirt and impurities, which makes it unable to supply the right amount of fuel to the combustion chamber. This condition causes the gas and fuel to burn early, burn late, burn incompletely, or even cause the engine to misfire...
The consequences can be listed as: The engine is weaker when moving, vibrates and grinds when the car is idling. If left for a longer time, the car will also experience problems such as: Difficulty starting or not starting, stalling while moving, shaking when accelerating,...
Exhaust has black smoke or sparks
When sparks appear in the exhaust pipe, it may be due to a clogged fuel filter, leading to an external explosion. Clogged fuel filters cause fuel and dirt to not be completely burned, leading to them escaping through the exhaust pipe as black smoke.
The car consumes more fuel than usual.
When the car consumes more fuel than normal, you can immediately think of the cause as the fuel filter is clogged. This leads to fuel burning early or late, causing the fuel to be burned incompletely. And at this time, the car owner needs to replace or clean the car's fuel filter.