The so-called automobile overhaul refers to the general name of the restorative repair that a new car or an overhauled car completely or nearly completely recovers the technical performance of the vehicle after driving for a certain mileage or time, through detection, diagnosis and technical appraisal, and through repair or replacement of automobile parts.

When does the car need overhaul?

When the vehicle mileage approaches the overhaul period, technical appraisal should be carried out to evaluate whether the vehicle needs overhaul. If you think the car can still be used, you should write down the mileage of continuous driving and then identify it. Regular technical appraisal can avoid premature or delayed maintenance. Whether the car should be overhauled depends on the technical condition of most assemblies. If most of the assemblies are in good technical condition, individual assemblies with serious wear can be overhauled.

For example, engine overhaul, due to the serious wear and aging of internal parts of the engine, the dynamic performance will be significantly reduced. At this time, it is necessary to overhaul the engine and replace the valve, piston, cylinder liner, boring cylinder and grinding shaft. Domestic cars generally need to be overhauled when driving around 6,543,800 kilometers, while imported cars generally need to be overhauled when driving over 6,543,800 kilometers. After overhaul, the engine performance can be restored to more than 90%.