Introduction: When it comes to the use and maintenance of automobiles, perhaps there are some misunderstandings in people's consciousness. These concepts seem to be correct, but actually they are very harmful. Not only do they damage the vehicle, but also seriously. Also threatens life. The following is a summary of some of the wrong ideas, hoping to give the owners to wake up.

1. When the engine is idling, the engine oil pump can not quickly press the lubricant into each lubrication surface due to the low rotation speed, and the oil pressure is also low, so that the engine parts are in the state of dry friction or semi-dry friction. Under the work; fuel due to poor low-temperature atomization, so that the unburned fuel into the crankcase, flush off the oil film on the cylinder wall, it will also accelerate the wear and tear of the parts. Therefore, after the engine is started for a few seconds, the application of fast idle temperature increases the engine's lubrication conditions.

2. Bake the oil at the end of the torch The use of the torch to bake the oil at the end of the winter will not only chemically change the additive in the oil, but also lose the original performance. It will also cause the oil to gel and deform the oil base and cause fire. The best practice is to use a suitable engine oil based on the lowest temperature in the local winter.

3, tire pressure rather high not low, some people like to tire pressure is high, think that this can not only overload but also save fuel. This is not correct. Too high tire pressure will reduce the tire's ground contact area, increase wear, and it is also easy to puncture tires. Too high tire pressure will reduce the adhesion coefficient of the tire, reduce the braking effect during braking, and increase the amount of slippage, which will cause great harm to traffic safety. Low tire pressure is not good, will cause tire shoulders, tires, fuel consumption and so on. It should be inflated according to the standard air pressure indicated on the tire. The inflation volume is generally within ± 5% of the standard air pressure.

4, blindly remove the engine thermostat if the engine temperature due to blindly remove the thermostat, the coolant can only be a large cycle, can not adjust the cooling intensity, it is difficult to ensure that the engine works at a more appropriate temperature, but the engine is often in Working at low temperatures results in a drop in engine power, accelerated wear, and increased fuel consumption. If the engine temperature is still high after troubleshooting or replacing the engine thermostat, other parts of the cooling system should be inspected and the thermostat cannot be removed.

5, the engine temperature is not afraid of high fear of low, some people think that when the engine temperature is not afraid of high fear of low. In fact, when the engine temperature is low, the danger is also great. Cars should be driven according to the normal temperature specified in the vehicle's instruction manual to ensure the service life of the engine.

6. The tighter the water pump fan belt, the tighter the belt is, the better. Too tight a belt not only makes it stretch or break, shortens the service life of the belt, but also results in excessive deformation of the generator shaft, water pump shaft, and early bearing damage due to excessive tension. The tightness of the car engine fan belt should meet the technical requirements. Normally, the normal belt is equipped with a deflection of 10-15mm.