Vehicle oil leakage is a very headache for car owners. It not only causes oil loss and waste, increases vehicle costs, but also affects vehicle performance, causes component damage, and affects driving safety. The fault of vehicle oil leakage can be large or small, and specific problems need to be analyzed. The Darong axle briefly summarizes the several locations where the vehicle is most prone to oil leakage, and car owners can pay more attention during daily maintenance.

Engine oil pan

The engine oil pan is a location where oil leakage is relatively easy to occur, and it is also a dangerous location for oil leakage. Once the amount of oil leakage increases, oil splashing onto the high-temperature exhaust pipe during driving is highly likely to cause the vehicle to self ignite. The reason for engine oil pan oil leakage is generally due to the fastening screws not being tightened according to the specified torque, whether they are too loose or too tight, it may cause oil leakage.

In addition, if the sealing gasket of the engine oil pan is not replaced for a long time, it is also easy to have poor sealing, leading to oil leakage from the oil pan; There are also some reasons, such as not paying attention when driving, causing the vehicle to support the bottom or causing damage to the oil pan due to collision, which can also easily lead to oil leakage.

Fixed point between crankshaft and engine body

If you find that a small piece of black oil often appears on the ground behind the engine fan or at the connection between the transmission and the engine after your vehicle has been parked for a long time, it is likely that the front and rear crankshaft oil seals have malfunctioned, causing poor sealing and oil leakage, such as improper installation of oil seals, aging of oil seals, excessive internal oil, and so on.

Dryer exhaust valve

Under normal circumstances, the exhaust valve of the dryer emits air or a small amount of water. If the owner finds that the air or water discharged by the exhaust valve is mixed with oil, and after troubleshooting the pipeline and valve body, it is necessary to consider the malfunction of the air pump, such as excessive piston ring clearance, and repair or replace the air pump.

Shock absorber oil leakage

Shock absorber oil leakage is also common, usually caused by shock absorber failure. There are many methods to determine whether the shock absorber is malfunctioning, such as maintaining low speed driving and emergency braking on a safe road section, observing the braking posture of the vehicle, and if the vibration is too large, it indicates that the shock absorber is malfunctioning; For example, when the car is parked, one can press down on one corner of the body and release it. If the body rebounds and quickly stabilizes, it indicates that the shock absorber is normal. If it oscillates repeatedly for several times before stabilizing, it indicates that the shock absorber is damaged and it is recommended to replace it directly.

Connection between engine and transmission

After oil leakage occurs at the connection between the engine and transmission, it is necessary to determine whether the leaked oil belongs to engine oil or gear oil. It can be distinguished from the odor. Generally, engine oil is the odor of ordinary oil, while gear oil has a slight odor to some extent.

If the leaked oil is engine oil, it indicates that the engine crankshaft oil seal is leaking; If it is gear oil, it indicates that the transmission is leaking oil. Of course, it is also possible that the internal gears of the gearbox are severely worn, resulting in excessive clearance and causing the vehicle to leak oil.

Vehicle rear axle

The common cause of rear axle oil leakage in vehicles is oil seal failure, such as unqualified oil seal quality or prolonged failure to replace, resulting in a decrease in its sealing and ductility; Rust, rust, burrs, roughness and other defects on the rotating shaft cause oil leakage from the oil seal; Excessive filling of lubricating oil or excessive impurities; Improper installation of oil seals or failure of internal components, etc. In addition, it may also be caused by excessive clearance between the rear axle bevel and sector teeth, or by the misalignment of the transmission shaft rotation.

It is recommended that car owners carefully observe the vehicle during maintenance and regularly maintain it. If a vehicle leaks oil, they should try to find professional maintenance personnel for maintenance. As the saying goes, "sharpening a knife does not miss cutting firewood". Only by maintaining and repairing the vehicle well can it achieve higher application value and prevent chain breakage when working.