What to Do When a Class B Driver's License is Deducted 12 Points?

Can the hood be repainted for more than 30% of its area?

Changing the color of a car requires submitting the motor vehicle safety technical inspection certificate, and the area of the car wrap must not exceed 30% of the total body area. If it exceeds this limit, approval from relevant authorities is mandatory. Below is an introduction about vehicle modifications: 1. Introduction to vehicle modifications: This involves replacing, adding, or removing parts of the original factory model or altering its appearance. Reasonable and scientific modifications can make the original vehicle safer to drive and improve its performance. Vehicle modifications are both an expression of personal style and a need for enhanced driving performance and safety. 2. Regulations related to vehicle modifications: Laws and regulations impose restrictions on vehicle modifications. The model, engine type, and frame number of the car cannot be altered, and the body structure must not be compromised. Changing the color of the car, replacing the engine, body, or frame requires inspection of the vehicle. Additionally, replacing the engine, body, or frame necessitates submitting the motor vehicle safety technical inspection certificate. The area of the car wrap must not exceed 30% of the total body area; exceeding this limit requires approval from relevant authorities.

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Is it necessary to replace a faulty three-way catalytic converter?

It is necessary to replace a faulty three-way catalytic converter. Here are the relevant details: 1. Causes of failure: Generally, the causes of three-way catalytic converter failure include poor fuel quality, engine malfunctions, and reaching the designed lifespan. Lead and sulfur in fuel, as well as phosphorus and zinc in lubricating oil, can cause significant harm to the three-way catalytic converter, with lead being the most harmful. Engine misfires, excessively rich or lean air-fuel mixtures, and engine oil burning can also severely affect the catalytic converter. Once the designed lifespan is reached, replacement is the only option. 2. Consequences of failure: If the three-way catalytic converter fails and the oxygen content at both ends is the same, the oxygen sensor will send a signal to the electronic control unit indicating excessive oxygen levels. The unit will then interpret this as a lean mixture and increase fuel injection, resulting in an overly rich mixture and higher fuel consumption. If the catalytic converter is clogged, the oxygen sensor will detect insufficient oxygen in the exhaust, misinterpreting it as an overly rich mixture, and reduce fuel injection, leading to a lean mixture and symptoms like poor acceleration. Additionally, a malfunctioning three-way catalytic converter will cause carbon monoxide and hydrocarbon levels to exceed standards during vehicle inspections, resulting in failure to pass annual inspections and inability to obtain the vehicle inspection compliance sticker.

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How to Judge the Distance of the Rear Vehicle Using the Right Side Mirror?

The method to judge the distance of the rear vehicle using the right side mirror is as follows: 1. When the rear vehicle occupies more than half of the right side mirror area: Only half of the vehicle body is visible. At this time, the rear vehicle is very close. You should maintain your current lane, avoid making right turns, changing lanes to the right, or emergency braking, while observing the movement of the rear vehicle and being prepared to yield at any time. 2. When the rear vehicle occupies half of the right side mirror area: The entire vehicle is visible. At this time, the rear vehicle is about 10,000mm away. You can perform operations such as turning on the signal, making a right turn, changing lanes to the right, or braking slowly when the speed is slow and safety is ensured. 3. When the rear vehicle occupies less than half of the right side mirror area: The entire vehicle is visible. At this time, the rear vehicle is more than 15,000mm away. You can perform normal operations while ensuring safety.

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Will switching from 5w30 to 0w30 affect the engine?

Switching from 5w30 engine oil to 0w30 engine oil will not have any negative impact on the engine, and it actually benefits the engine. 0w30 oil has better low-temperature fluidity than 5w30 oil, which helps reduce engine noise and internal component friction after cold starts. Here are the differences between the two oils: 1. Different low-temperature fluidity: 5w30 oil can flow normally at -30°C, while 0w30 oil can flow normally at -35°C, making 0w30 oil superior in low-temperature fluidity. 2. Different viscosity: The kinematic viscosity of 5W30 at 100°C is 11, while that of 0W30 is 12.2. The shear value of 5W30 is 3.1, and that of 0W30 is 3.6, so 5W30 is thinner with smaller molecular structure under high temperatures.

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What to Do When the Validity Period of the Driving License's Supplementary Page Expires?

If the inspection validity period of the supplementary page of the driving license has expired, it needs to be replaced. Below is an introduction to the renewal of an expired driving license: 1. Rules for renewing an expired driving license: If the driving license has been expired for less than one year, you can apply for renewal at the local vehicle management office of the public security traffic police by submitting required documents such as ID card, driving license, physical condition certificate, and driving license photos. 2. Required documents for renewal: "Motor Vehicle Driving License Application Form," which must be signed by the applicant; the original driving license; the identity proof of the driver (original and copy); if the applicant cannot be present, a jointly signed application form by the applicant and the agent, as well as the identity proofs of both (original and copy), etc., must be submitted.

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What to Do When Car Fuel Consumption Increases Sharply with Air Conditioning On?

It is normal for a car's fuel consumption to suddenly increase after turning on the air conditioning. Here is a related introduction to car air conditioning: 1. Introduction to car air conditioning: Car air conditioning is an important comfort feature in a vehicle, capable of both cooling and heating. When the air conditioning is in cooling mode, the AC button must be pressed, at which point the compressor clutch engages, allowing the engine to drive the compressor. The compressor then continuously compresses the refrigerant and delivers it to the evaporator. 2. Components of car air conditioning: Generally include the cooling system, heating system, and ventilation system. This integrated setup makes full use of the limited space inside the car, featuring a simple structure and ease of operation, making it a popular modern car air conditioning system internationally.

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What to Do When a Class B Driver's License is Deducted 12 Points?

Can the hood be repainted for more than 30% of its area?

Is it necessary to replace a faulty three-way catalytic converter?

How to Judge the Distance of the Rear Vehicle Using the Right Side Mirror?

Will switching from 5w30 to 0w30 affect the engine?

What to Do When the Validity Period of the Driving License's Supplementary Page Expires?

What to Do When Car Fuel Consumption Increases Sharply with Air Conditioning On?

What to Do If Your Vehicle License Plate is Cloned?

How to Replace Car Key Battery?

How to Deal with Peeling on Car Headlight Surface?

What is the difference between 4S store maintenance and external maintenance?