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This element - the high pressure fuel pump - is the main part of the entire fuel injection system of diesel engines. The main functions of the fuel pump are pumping a certain amount of fuel under pressure and determination of the injection start moment. However, when appeared accumulator injection systems the function of the fuel injection time regulation passed to the electronically controlled injector. The basis of the fuel pump is a pump element, combining the piston and a small cylinder. Pump element is made of high-graded steel and high accuracy of manufacture adherence. Due to this between the piston and the cylinder there is a minimum gap, which is called a precision connection.

As for the design of the high pressure fuel pumps, they are of three types - in-line, dispenser and the main line. The first type of fuel pump – in-line – is characterized by the fact that the fuel is injected into the cylinder with a separate pump element. Regarding the dispenser pump we should note that it has one or more pump elements, which provide pumping and fuel injection through all cylinders. The third type of pump – main line - performs only one function. It pumps fuel into the accumulator.

In addition, this component is used in a system of direct injection of gasoline-powered cars. At the same time, it differs from the above fuel pump because its operating pressure is much lower than in the diesel pump. If workers of service centre diagnosed breakage or wear of high pressure fuel pump, you need to replace it with a new one. Our online shop is an excellent assistant that will help you to save on spare parts from throttle valve to radiator. Moreover, you will not need to wait long. You will get it in several working days and will replace in the garage or by yourself.

What you need to know about fuel pump replacement: lifetime limits, common defects and their signs, tips and recommendations

The fuel pump has no specified lifetime limit. Its service life depends on quality of used petrol or diesel fuel, as well as peculiarities of car operation. Particularly, it is not recommended to drive with the almost empty fuel tank.

Most of all, replacement of the fuel system pump is necessary at mechanism jamming. Engine power loss and car dynamics worsening usually indicate breakdown of this component. Also, troubles with engine start are among common signs of fuel pump malfunction.

It is recommended to check the petrol or diesel fuel pump at a service station. This is determined by the fact that these works are fire-hazardous.

At first, specialists will perform computer diagnostics. Then, the fuel piping will be checked for leakage presence. The next stage is measuring voltage on the pump terminals with the help of a multimeter. It should be equal to 12V. If the elements, noted above, are operative, pressure in the fuel system is to be checked with the help of a manometer. Obtained data are compared with ones, noted in car technical operation manual. It is also necessary to replace the fuel pump (operating on diesel or petrol) at a service station only.