How to Check If a Driver's License Has Been Revoked?

What Causes the Clunking Sound from the Front Wheels When Going Over Speed Bumps?

The clunking sound from the front wheels when going over speed bumps is caused by a loose stabilizer bar or faulty shock absorbers. When a car goes over a speed bump, it involves the compression movement of the wheels (including the suspension) between the ground and the car body. Noise from the shock absorbers themselves is rare and usually only occurs when they are malfunctioning. It is recommended that owners promptly inspect and repair the vehicle when such noises appear. Shock absorbers can be categorized based on the damping material used, mainly into hydraulic and pneumatic types, with another type being variable-damping shock absorbers. The primary function of shock absorbers is to suppress the oscillations from the rebound of springs after absorbing shocks and the impacts from the road surface. When driving on uneven roads, although the shock-absorbing springs can filter out road vibrations, the springs themselves still undergo reciprocating motion, and the shock absorbers are designed to control this spring bounce.

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What Causes the Rattling Sound in the Steering Wheel When Driving on Rough Roads?

The rattling sound in the steering wheel when driving on rough roads can be caused by several reasons: friction between the steering column and floor mats, malfunction of the clock spring (spiral cable), lack of lubrication in the shock absorber's thrust bearing, loose stabilizer bar bushings, dirty power steering fluid, or noise from the turn signal return clip. Additionally, faults in the shock absorbers or stabilizer bar links may also be the culprit. It is recommended to visit a 4S store or professional repair shop for inspection and maintenance. The steering wheel is a wheel-shaped device used in cars, ships, and airplanes to control the direction of travel. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque, which is then transmitted to the steering shaft. It mainly consists of a skeleton, foam padding, and the driver's airbag.

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What is the reason for the car door lock not springing back and the door not closing?

The reasons for the car door lock not springing back and the door not closing are: 1. Lack of lubricating oil inside the door lock; 2. Grease buildup inside the door lock; 3. The door lock freezing after washing the car in winter. Once these types of problems occur with the vehicle door, they should be repaired promptly, otherwise they will affect driving safety. The car door lock is designed to facilitate the use and safety of the car by centrally controlling the locking and unlocking of the four doors. Method for removing the car door lock: 1. Remove the sound insulation trim panel on the inner side of the door; 2. Disconnect the central door lock wiring harness connector and the central door lock motor; 3. Unplug the wiring harness connector of the central door lock motor, and remove the lock bracket to take down the door lock.

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How Many Years Are New Cars in 2021 Exempt from Inspection?

New cars in 2021 are exempt from inspection for 6 years. When you register your car after purchase, you will receive an annual inspection sticker with a validity period of two years. Vehicles exempt from inspection within six years include: non-commercial cars, other small vehicles, and micro passenger vehicles. The six-year exemption from inspection refers to vehicles that are exempt from on-site inspection within six years and can directly apply for inspection stickers from relevant departments. However, owners still need to provide proof of compulsory traffic insurance, vehicle and vessel tax payment or exemption every two years. Things to note about the annual inspection of vehicles exempt from inspection within six years: 1. Go to the vehicle management office within the specified period to collect the annual inspection sticker; 2. The required documents for on-site inspection are the vehicle license, compulsory traffic insurance certificate, vehicle and vessel tax payment or exemption certificate, and the owner's ID card; 3. Failure to collect the annual inspection sticker will be regarded as failing to conduct the annual inspection as required.

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What Do Horsepower, Torque, and Power Represent?

Horsepower is a commonly used unit of power measurement in engineering. Torque is the force that causes an object to rotate. Power refers to the amount of work done by an object per unit of time, meaning power is a physical quantity that describes how fast work is done. The relationship between horsepower, torque, and power: Horsepower and power can be converted into each other. Both horsepower and power indicate how much work an engine can perform per unit of time. An engine with higher power has stronger performance but also higher fuel consumption. Power is an important performance parameter of an engine. Torque refers to the moment that the engine crankshaft can output, which is the force that makes the crankshaft rotate, hence also called torque. An engine with higher torque also has higher power. Power is directly proportional to both speed and torque. An engine with higher speed also has higher power because it performs more work cycles per unit of time. Horsepower, torque, and power each determine a specific factor of a vehicle: Power determines the maximum speed a vehicle can achieve; torque determines how quickly a vehicle can accelerate. However, when torque alone cannot increase speed, power is needed to enhance it. Therefore, power and torque complement each other.

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What are the new regulations for private cars after 15 years?

The new regulation for vehicles over 15 years old is that the inspection cycle is every six months. For vehicles over 10 years: For private cars over 10 years old, the original inspection cycle is still followed, i.e., 10-15 years, inspected once a year; over 15 years, inspected every six months. On the basis of exempting non-operational small and mini passenger vehicles with 6 seats or less from inspection within 6 years, the exemption now also includes non-operational small and mini passenger vehicles with 7 to 9 seats (excluding minivans) within 6 years. Under 10 years: For non-operational small and mini passenger vehicles (excluding minivans) over 6 years but under 10 years, the inspection frequency is adjusted from once a year to once every two years. If a vehicle is involved in a fatal traffic accident or is illegally modified and penalized according to law, it will still follow the original inspection cycle to ensure the vehicle's safety performance. Inspection content includes: whether the vehicle has a user manual, certificate of conformity (inspection certificate for imported vehicles), and whether the factory inspection marks on the vehicle body are complete; measuring the external and internal dimensions, wheelbase, and axle track of the vehicle. Specific measurement items include vehicle length, width, height, cargo compartment height and area, wheelbase, axle track, etc.; each item is checked according to technical inspection standards. Upon passing the inspection, fill out the "Initial Inspection and Alteration Registration Form for Motor Vehicles" and record the curb weight, load capacity, passenger capacity, and driver's cabin seating capacity as specified by the manufacturer. For non-operational passenger cars, the previous mandatory scrapping age was 15 years, but this did not align well with the actual usage of motor vehicles in China. Therefore, China issued new private car scrapping regulations, eliminating the mandatory scrapping age and replacing it with a guideline for scrapping when the mileage reaches 600,000 kilometers.

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How to Check If a Driver's License Has Been Revoked?

What Causes the Clunking Sound from the Front Wheels When Going Over Speed Bumps?

What Causes the Rattling Sound in the Steering Wheel When Driving on Rough Roads?

What is the reason for the car door lock not springing back and the door not closing?

How Many Years Are New Cars in 2021 Exempt from Inspection?

What Do Horsepower, Torque, and Power Represent?

What are the new regulations for private cars after 15 years?

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