![]() ![]() ![]() The problem appears only then when there is so much dirt in the fuel system or a particle is so big, that it can block the fuel. The engine then works properly and the change can be not noticeable to the drivers. What is the danger of driving with a used-up fuel filter?Ī used-up fuel filter can show no symptoms of malfunction for a long time. In extreme cases, we can even experience damage to the injection system, and this, in turn, generates huge costs of repair. ![]() All aberrations clearly influence the work of the engine, its power and composition of exhaust gas. Precise injection systems in diesel engines and petrol engines with direct injection require exceptionally precise doses of fuel. When a carburettor got clogged up, it was enough just to clean it.Įverything changed once modern petrol engines and diesel engines got more popular. Possible dirt particles did not influence the work of the engine much, and the quality of exhaust gas or precision of fuel dosage was not so important at that time. It was not really efficient, but it was also not so needed, as the fuel system with carburettor had a quite high tolerance of impurities and low quality of fuel. Carburettor took its role, using a built-in filtering sieve. Not long ago one could find passenger cars with no fuel filters. PURRO offers all those types of filters and mechanics can easily find a filter for the particular make and model of the car in our product range. There are also other systems applied, such as magnets to catch metal particles, return valves to prevent the reward flow of fuel, fuel heaters and also water content sensors. In some of them, it is possible to drain collected water, using a special valve with a seal. Models which are used in diesel engines are also equipped with water separators, which collect water from diesel fuel. The fuel pump is responsible for delivering the fuel from the tank to the injection system.Įach filter has a particular direction of flow for the petrol or diesel fuel, that is why it is important to pay attention to it when fitting a filter on a car. Diesel engine cars have mostly the second solution. Filter housings may be made of plastic (e.g., transparent) or metal. Filter stub pipes are connected to two fuel pipes or hoses. The filter is most often in the form of a closed, tight can, where a corrugated cartridge is enclosed, made of synthetic or cellulose fabric. ![]() The principle of operation of a filter is simple. PURRO products meet all those strict norms. Fuel filters used in petrol engines are to catch particles which are not bigger than 10 μm, and in the case of diesel engines they need to be even more precise – 3 μm. Some of them may not be visible to the naked eye. The fuel that we pour into the tank can contain such particles as small metal pieces, particles of rust, sand, organic deposits, clay, mud or other particles which are harmful to the engine. This does not mean that the fuel is totally with no impurities. Modern petrol stations do their best to deliver the cleanest possible form and quality of fuel, meeting norms set forth by the European Union. The task of a fuel filter is slightly easier than the task of an air filter. How to diagnose a fuel filter being used up? How often should one replace the filter and what can driving with a dirty filter lead to? Meanwhile, the quality of fuel and infrastructure of many petrol stations is far from perfect. The fuel filter is one of the most neglected running parts in a car. ![]()
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