Car maintenance is a technical job. There are many things that need to be paid attention to in the maintenance process. However, some car owners like to deal with the problem first, but because they are not professional maintenance personnel, they will be in the process of repairing. Often use some wrong maintenance methods to deal with your car, which often leads to more injuries to your car. The following editor introduces some common car maintenance mistakes.
Baking the oil base with a blowtorch
Baking the oil base with a blowtorch in winter will not only make the oil in the oil The chemical changes of the additives will cause the original performance to be lost, and it will also cause the oil to be cemented and the oil bottom to be deformed, which is easy to cause fire. The best way is to choose the appropriate oil according to the minimum temperature in the local winter. Where possible, it is best to park the vehicle in a garage with thermal insulation.
The engine is heated at idle speed
When the engine is heated at idle speed, due to the low speed, the oil pump cannot press the lubricating oil into each lubricating surface quickly. The oil pressure is also low, so that the moving parts of the engine work under dry friction or semi-dry friction; the fuel is poorly atomized at low temperature, so that the unburned fuel (air mixture) escapes into the crankcase and washes off the oil film on the cylinder wall. , will also accelerate the wear of the parts. Therefore, after the engine is started for a few seconds, the application of fast idle speed heating (a fast idle speed device is specially equipped on modern cars, after the machine temperature rises, it will automatically adjust to the idle speed state) to improve the lubrication conditions of the engine.
The tighter the pump fan belt the better
The tighter the belt is not the better. If the belt is too tight, it will not only elongate or break, shorten the service life of the belt, but also cause deformation and bending of the generator shaft, water pump shaft and early bearing damage due to excessive tension. The tightness of the fan belt of the automobile engine should meet the technical requirements. Generally, the deflection of the normal belt assembly is 10-15mm.
The engine temperature is not afraid of high but not low.
Some people think that the engine temperature is not afraid of high but not low when driving. In fact, it is also very dangerous when the engine temperature is low. To ensure the service life of the engine, drive at the normal temperature specified in the car’s instruction manual.
Editor’s summary: When there is a problem with the car, if it is not a professional repairman, it is best not to deal with it yourself, because car repair involves a lot of knowledge, and there are often some special matters that need to be paid attention to when repairing. Unpredictable damage can result if not taken care of.