When do you need to change your car’s fuel filter? How much does it cost to replace a car fuel filter?

The car fuel filter is a small but extremely important part for your car. They help remove rust and impurities in gasoline before it passes through the fuel pump and fuel injectors into the engine combustion chamber. This will help burn the fuel and gas mixture more efficiently, extending the life of the engine’s internal components.

Replace car fuel filter

However, not everyone knows when is the right time to change the fuel filter. In the article below, CarOn will answer your questions!

When should I clean my car fuel filter?

Because you have to filter dirt and impurities in gasoline, after a long time of use, the car gasoline filter will become dirty. This will cause a blockage, causing the filtration process to slow down, leading to fuel not being able to enter the engine or entering with insufficient flow. Directly affects the combustion process of the fuel mixture, causing phenomena such as: Vehicle vibration; weak; car is difficult to start; jerking when accelerating or even freezing during operation.

How often do you need to change your car’s fuel filter?

According to the parameters given by companies, there may be slight differences, however, with climate conditions and gasoline quality in Vietnam, it will fluctuate around 40,000 km (40,000km).

According to the experience of drivers in the i10, morning, accent, vios, k3, cerato, spark, innova, mazda, camry, wigo, fadil, altis,… the range fluctuates around 80,000 km (80,000 km). Just need to replace fuel filter.

Do I need to replace the entire fuel pump assembly?

With car models such as: i10, morning, accent, vios, k3, cerato, spark matiz, innova, mazda, camry, altis, wigo,.. there is no need to change the entire fuel tank, just change the fuel filter. Okay, both economical and still guaranteed.

Signs the filter needs to be replaced

Strange noises came from the car’s engine

Strange noises at the engine

A few minutes after we start the car engine, if you still hear noises in the engine, a jingling sound, the filter is most likely clogged. Those small noises mean the fuel tank filter is too dirty, causing not enough fuel being put into the engine, causing the pressure in the engine to drop.

The engine starts irregularly or cannot run

It’s very possible that your filter is too dirty and the gasoline can’t get through to the combustion chamber, so the car can’t start. If we keep trying to accelerate when the filter is clogged, it will make popping sounds because the car is lacking fuel. Sometimes it takes a long time to start and it will start but won’t run like it’s lacking fuel. That’s why we know that the fuel tank filter is also very important.

The fuel filter is clogged, so the amount of fuel is insufficient and inconsistent, so when the car runs like that, we will feel very uncomfortable. In order for the car to operate, you should press the accelerator pedal many times to increase the pump power to provide enough gasoline for the car to drive and take your car to a maintenance center to fix that situation.

Car consumes fuel

Cars quickly run out of gas

If the gasoline filter is clogged, it will cause the fuel to burn early or late, leading to incomplete combustion. Not only is it difficult to start and run rough, but it also makes the car use more fuel than usual. The cause here is that the fuel filter is clogged, so the amount of fuel supplied to the engine is uneven, causing the car to run out of breath. If the excess is not completely burned, it will be discharged, causing waste and environmental pollution. Therefore, replacing the fuel filter must take place as soon as possible.

Engine starts outside or quits

Engine quits

External explosion is the phenomenon of sparks flying out of the exhaust pipe, because the combustion process does not take place in the cylinder, but outside the engine, right in the exhaust pipe.

Skipping is a phenomenon in which the engine does not start evenly, due to some cylinders exploding and some cylinders not exploding. This makes the engine sound uneven, the engine vibrates, and reduces working capacity, negatively affecting the vehicle’s ability to operate.

The cause of these two phenomena is a clogged fuel filter. Clogging the filter interrupts the process of supplying fuel to the engine. Sometimes there is not enough fuel, causing the car to run out of breath. When there is too much, it is not completely burned, so it is discharged through the exhaust pipe, causing an external explosion. The cause of the engine stalling is insufficient fuel, causing the engine to not operate evenly.

The exhaust pipe has sparks and a lot of gas is emitted

The exhaust pipe emits a lot of smoke

A dirty fuel filter can cause an external explosion, that is, the exhaust pipe has sparks, more gas is emitted than usual, and has a strange color. The reason is because the fuel in the engine cylinder is not completely burned, so the exhaust gas in the exhaust pipe burns, causing a spark. Signs that the vehicle is emitting black smoke.

Cannot accelerate

When you press the accelerator pedal, fuel will be sent to the engine to increase the vehicle’s speed. But a clogged filter will lead to insufficient fuel supply into the combustion chamber, causing the car to stall. The consequence will be that the vehicle accelerates slowly or cannot accelerate or go fast.

How to change and clean car fuel filter at home

Cleaning a car fuel filter is quite simple for car owners, and you can do it at home according to the instructions. Below are 2 ways you can refer to:

Clean indirectly with specialized cleaning solution

On the market today, there are many specialized automotive fuel system cleaning solutions. These solutions help clean the entire fuel injection system, descale the pipes, fuel pump, fuel filter, injectors and even the combustion chamber.

Usage is also very simple, just buy it and pour it directly into your car’s gas tank. The solution will absorb gasoline and clean the entire system, including the car fuel filter. Each product will have its own standards and mixing ratios. Please read the instructions carefully before doing it!

Clean directly

Change fuel filter at home

With this method, you need to remove the fuel filter and take it outside to wash it directly. This cleaning method is more effective but is more complicated and time-consuming. Because you need to disassemble the fuel filter. You can discuss how to remove/install the fuel filter in the fuel filter replacement instructions below.

Step 1: Drive the vehicle back to an area where the floor has a flat, sturdy surface.

Step 2: Reduce fuel pressure

– Loosen the gas cap to reduce fuel tank pressure.

– Remove the fuel pump control fuse.

– Start the engine and run at idle until the remaining fuel in the pipes runs out and the engine stops.

– Drive the engine for two seconds to remove any remaining pressure.

Step 3: Disconnect the power connection to the fuel filter control battery.

Step 4: Disconnect the battery wire

Find the fuel filter by looking under the vehicle or underneath the vehicle near the fuel tank. Next, disconnect the fuel line from the fuel filter.

Step 6: Remove the car fuel filter and clean it

Step 7: Reinstall the car fuel filter. Then restart the engine and check for fuel leaks in the system.

Hopefully the above information will help car owners gain more experience in effectively repairing and maintaining car fuel filters.

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