Is the tighter the bolt of the car, the better? What problems can be caused by too tight? Will there be damage to the car?

The bolts used in the car are not as tight as possible, these bolts and nuts are connected to the fasteners, there are many fasteners, in order to ensure that they have sufficient preload, they cannot be overtightened. If it is tightened too tightly, it may cause the external connection parts to be permanently deformed under the action of external force, resulting in sliding buckles and breakage, affecting the life of the car.

Car bolts are not tighter as possible, moderate is enough
The bolts and nuts used in the car are connected to multiple fasteners, in order to ensure that these parts have sufficient preload, in the installation process, can not be too tightened, if too tight, it is easy to lead to these external connections under the action of permanent deformation, but also will lead to excessive stretching and deformation of bolts in the process of use, resulting in slip buckles or even breakage. For example, on automotive knock sensors, if the screws are tightened, the sensor will be too sensitive, the engine acceleration will also be affected, and if it is too loose, it will lead to poor signal detection.

The bolts are too tight and potentially dangerous
Many people think that the bolts on the car should be reinforced a few more times in the process of maintenance, so that there is a safety guarantee, but in fact, if the bolt is reinforced with too much force, but the screw exceeds the design stress, under the action of the external force of the connector, it will produce permanent deformation, the preload of the bolt will also decrease, and when it is used for a long time or pulled suddenly, it will produce a violent force, resulting in bolt slippage and breakage.

Overtightening of the bolts can make it difficult to remove the spark plug and hub screws
If the bolts on the car are tightened too tightly, it is easy to affect the work of various parts. For example, if the spark plug is in the gap, if the screw is tightened, then the gap will be very small, and it is easy to be burned out during work. If the gap is too large and the ignition becomes weak, there will be a direct disconnection of the fire, and if it is tightened too tightly, it will also lead to deviation in the arc ignition angle inside the spark plug, thus affecting the ignition efficiency of the car.

In addition, the hub screw of the tire is mainly to connect the brake pad and brake oil, if it is too tight, and then replace these parts, it is very inconvenient to remove the hub screw. The bolts of the car have clear torque requirements when they are used, and a certain tightening force is required in each part, if it is too tight, the bolt will break, and even the under-tightening bolt will be loose.

Torque wrenches can be used to precisely set the torque value
In the process of disassembling the bolts on the car, you can choose to use a torque wrench, the advantage of this wrench is that the torque value can be precisely set, and the torque can be adjusted, so that the bolt can be tightened well.

According to different brands, different models of bolts need torque is not the same, the specific torque value, we have to set according to the vehicle instructions of the car, the use of torque wrench in the tightening of the screw to achieve a fixed torque value, if not able to reach the specified number of torque, it is easy to lead to bolt automatic unloading, over time, it will lead to damage to the internal parts of the vehicle, the life of the car will also be affected.

All in all, the bolts on the car are not tightened as much as possible, if they are tightened too tightly, it will cause the bolts to deform and break, thus affecting the work between the various parts. It is recommended that in the process of overhauling the vehicle, choose a torque wrench, set it according to the fixed torque value in the manual, use the bolt correctly, and extend the service life of the car.