How to determine if an oil and gas separator on a car has failed?

A failed oil and gas separator on a car can lead to the symptoms of engine jitter after cold start, oil combustion, too high concentration of air-fuel mixture, and visual alarm generated by engine fault light. Overhaul is recommended in order to avoid any thread to driving safety. The oil/gas separator is a key part in an electric submersible pump system. It serves as the entrance of oil and gas into the multi-stage centrifugal pump, and separates out free gas from well liquid before the gas/oil mixture enters the pump, thus reducing the impact of gas on performance of the electric submersible pump system, preventing cavitation and airlock in the … Read more…

How often should brake shoes be replaced?

1. Check the thickness of the brake shoes with the aid of a small flashlight. If the black friction layer of the brake shoe nearly wears out with a thickness of less than 5 mm, it should be replaced; 2. If a screeching metal sound is heard during braking, the alarm iron on the brake block has already begun to scrape against the brake disc; 3. If the brake is softer and more difficult to maneuver than usual, or if you need to press it more deeply to achieve desired braking effect, or if you clearly feel that the pedal is at a lower-than-normal position during emergent braking, the brake … Read more…

How to deal with a broken 03G121065AC coolant pipe?

If the 03G121065AC coolant pipe is only slightly damaged, apply a layer of soap first, and then wrap up the broken part with tape and tie it up with a wire or thin rope as a way of emergent repair. Next, you should drive the car to the nearest maintenance site or 4S shop for repair or replacement in time. If the pipe is damaged seriously and beyond repair, you should call road rescue service. If the cooling system of the car is blocked due to excessive dirt, oil, or scale, the coolant circulation will be impeded, causing the coolant to become too hot and damage the pipe. In the … Read more…

What are the symptoms of a broken oil pressure regulating valve?

If an oil pressure regulating valve breaks, the car may experience flameout on the road, and the oil pressure may become too high. Possible consequences of excessive oil pressure include too high mixture concentration, black smoke from the exhaust pipe, and insufficient power that in turn leads to too low fuel pressure and higher fuel consumption. Hence, such failure should be dealt with in time. Methods for examining the pressure in the fuel system: 1. Depressurization: Before checking the pressure of the fuel system, depressurization is necessary. To achieve this, first take down the fuel pump fuse, relay, or fuel pump plug, and then start the engine. After automatic flameout … Read more…

What failures may a throttle valve experience?

An electric throttle valve assembly primarily consists of the following parts: throttle valve body, solenoid drive, potentiometer, controller (or ECU in place of controller), and bypass valve. The valve may experience two types of failure: hard and soft failure. Hard failure refers to mechanical damage, while soft failure refers to contamination or misalignment. Hard failure The resistance part of the potentiometer is produced by spraying a carbon film coating on the PET base. This is actually a very elementary manufacturing process that results in low wear strength. In fact, such device is even inferior to potentiometers used in home appliances. Its sliding contact is formed by a row of reverse … Read more…

What is the service life of a 8K0959455G electronic fan on a car?

An original 8K0959455G electronic fan packed in a box can be used for about 5 years on a car. This service life may be shortened due to heavy wear at high RPMs. The battery of the fan can sustain operation of the fan for 45 minutes before recharging if it is relatively new, or 20 to 30 minutes if it has aged. Operation with engine off is not recommended, as this may reduce the service life of the battery. There are mainly two types of automotive fans: Axial fan: In an axial fan, the impeller pushes air to flow in the axial direction. The impeller of an axial fan is … Read more…

What are the differences between brake disc and brake block?

There are three differences between brake disc and brake block, shape, operation mode, and replacement time. In the daily use of a car, the braking system plays a very critical role. Different shapes Brake disc, also known as brake rotors, is mainly made of metal. With many air ports on the surface and a small ring inside, it is round in shape and resembles a CD disc. Brake block, also known as brake skin, is mainly made of ceramic, metal, and carbon fiber. It is a cuboid bearing resemblance to a sponge wipe. It typically consists of steel sheet, bonding insulation layer, and friction block. Different operation modes During drives, … Read more…

Where is the 1K1955119C wiper motor on a car?

The 1K1955119C wiper motor is located below the wiper blades. By removing the plastic cover that extends from one side of the car to the other side, you can find the wiper motor: 1. The wiper blades are driven by the wiper motor. Potentiometers are used to control rotation of the motor at different RPMs; 2. Behind the wiper motor there is a pinion drive that is sealed in the same enclosure as the motor. It reduces the output RPM to a desired level; 3. This unit is typically called wiper drive assembly. The output shaft of the assembly is connected to the mechanical device at the end of the … Read more…

What are possible reasons for an oil pump indicator going on?

1. The pressure-limiting valve is blocked or poorly adjusted. In order to prevent excessive oil pressure in the lubrication system and the resulting higher engine power consumption and oil leakage at sealed connections in the oil circuit, a pressure-limiting valve is set on the main oil path or oil pump. A failure of the pressure-limiting valve can lead to abnormal oil pressure and cause the oil indicator to go on. 2. Insufficient oil In the case of insufficient oil, the pumping capacity of the oil pump will be reduced. Oil pumping may also be prevented due to air ingress. As the oil pressure drops, the oil indicator will go on. … Read more…

Possible reasons for oil leakage of a valve chamber cover

Possible reasons for oil leakage of a valve chamber cover: 1. Uneven stress on the screws during assembly Uneven stress on screws causes pressure variations. Excessive pressure may result in deformation of the engine valve chamber and consequent oil leakage. In this case, the valve chamber should be repaired. 2. Aging of valve cover gasket If the car has been used for many years or with very high mileage, the valve chamber cover gasket may have naturally aged. This can be solved by simply replacing the valve chamber cover gasket and the seal. Oil leakage is often not easily perceived by the car owner. In fact, a sign of oil leakage can be discovered through a simple inspection … Read more…

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