Does a broken oil pump count as a major repair?
In addition, the damage to the oil pump does not constitute a major repair operation. It is a critical component of the fuel system, and in the event of a failure, the routine repair measure is usually to replace the new oil pump independently, such repair tasks are relatively simple and common, and do not require deep disassembly of the entire engine or repair of core structural parts. When there is a problem with the oil pump, the technician can complete the replacement of the oil pump without affecting the main engine overhaul, so the replacement of the oil pump should be classified as a minor repair service or part of routine maintenance. In contrast, the concept of an automotive overhaul usually involves the extensive replacement or repair of major mechanical components inside an engine, such as pistons, connecting rods, crankshafts, and cylinder liners.
What are the phenomena of fuel pump failure
When the fuel pump fails, it will lead to a series of significant vehicle performance anomalies, not limited to the following aspects: the vehicle's power is weakened when accelerating, the starting process becomes difficult, there may be sudden deceleration or stagnation during driving, and it may be accompanied by abnormal sounds from near the fuel tank; In addition, the engine failure warning light may be on, the engine may shake, and even there may be no warning of flameout; Even if the vehicle can still start, it may not be able to maintain a stable operating state. All of the above symptoms are strongly suggestive of a possible fuel pump failure, so we advise owners to take their vehicles to a professional repair shop as soon as possible if they are aware of a similar condition.
What is the general pump pump
The oil pump usually refers to the fuel pump, which plays a crucial role in the engine fuel supply system, its main function is to extract fuel from the fuel tank and efficiently transfer it to the fuel injection device or carburetor system inside the engine. According to the different working principles, the fuel pump can be divided into two categories: one is the positive displacement fuel pump, including but not limited to the plunger pump, gear pump and blade pump; The other type is impeller type fuel pump, such as centrifugal pump. Especially in modern vehicles, especially those equipped with electronic fuel injection systems, electric fuel pumps are commonly used, which have a variety of subdivided designs, such as roller type, flat blade type, turbine type and rotor type.
In addition, there is also a component of the oil pump in the engine lubrication system, whose task is to extract the oil from the oil pan and transport it to the parts of the engine that need to be lubricated by pressurization to ensure that all moving parts inside the engine can obtain adequate lubrication protection. The design and construction of oil pump mostly adopt the form of gear pump or rotor pump.
Low pressure fuel pump and high pressure fuel pump difference
In the automobile fuel supply system, low pressure fuel pump and high pressure fuel pump play different roles and have significant functional differences. The low-pressure fuel pump is usually installed in or near the fuel tank of the vehicle, and its main responsibility is to use electric or mechanical driving force to extract fuel from the bottom of the fuel tank, and perform initial pressure lift treatment, and then send this part of the fuel to the next stage of the high-pressure fuel pump, or directly into the high-pressure fuel rail. The fuel pressure generated by the low-pressure fuel pump is relatively low, generally maintained in the pressure range of several bars to ten bars, the main purpose is to overcome the various resistance encountered by the fuel in the transmission process, so as to ensure that the fuel can smoothly reach the location of the high-pressure fuel pump. High pressure fuel pumps are more commonly found in in-cylinder direct injection gasoline engines and common rail diesel engine systems, and are usually installed directly next to the engine, such as next to the cylinder block. Its core function is to re-pressurize the fuel delivered by the low-pressure fuel pump with high intensity, which significantly increases the fuel pressure to hundreds or even thousands of bars. The high-pressure treated fuel can be transformed into an extremely fine atomized mixture of oil and gas after entering the nozzle, thus ensuring that the fuel can be accurately and quantitatively injected inside the cylinder at a predetermined time. This process not only effectively improves combustion efficiency and reduces emissions of pollutants, but also plays a key role in optimizing the vehicle's overall power performance and fuel economy.