Diesel and petrol fuel filter for my car

Fuel filter’s function is to clean fuel from dirt, small particles and other foreign objects falling into the tank along with it. The absence of a filter can lead to clogging of fuel system components, engine malfunction and reduce lifespan of injection device and a fuel pump.

Carburetor. Filtration Quality is 15-20 micrometers. The housing is made of transparent nylon, which allows to monitor the level of contamination. The filter element is made of pressed cellulose and synthetic fibers.

Injection. The element does not pass in particles larger than 5-10 micrometers. The design is somewhat more complicated because of the greater degree of purity and a high pressure fuel line injector system. Materials used are mostly aluminum metal or heavy-duty plastic.

Diesel. Differences in structure are primarily caused by increased moisture content in the diesel fuel and the sensitivity of the apparatus. In the process of purification water, having a high density is deposited on the bottom of the filter and then removed from the system. Some models come with heating for preventing the formation of paraffins in the fuel at low temperatures.

Checking the fuel filter is conducted during a planned inspection. The element service life averages 20-60 thousand kilometers, depending on the type of the fuel system. Late replacement can lead to failure of the fuel pump, injection system and other expensive items.

• pollution;
• mechanical damage;
• gaskets and seals wear.

• loss of power;
• increased fuel consumption;
• engine stalls;
• jerks when driving uphill;
• the engine is hard to start;
• smudges of fuel on the joints.

• low quality fuel;
• ingress of foreign particles into the fuel system;
• improper installation;
• operation of the motor in an idling mode for a long time.

Repair of the fuel filter is not carried out, at a failure of the item it is to be replaced. Having a basic set of tools, you can do it by yourself. First of all, you should take care of security just in case prepare a fire extinguisher, ventilate the area, reduce the pressure of the fuel system, and disconnect the battery.

The plan of actions:

• turn off the fuel pump relay;
• start the engine and let it go off on its own;
• loose the fastenings and dismantle the old part;
• install a new filter and make sure there are no leaks in the joints;
• first connect the relay and then the battery terminals;
• start the engine and check correct operation.

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Useful information on functions, causes of malfunction, diagnosis and replacement intervals

• Diesel Fuel Filters – symptoms problems and replacement