Does driving fast or slow consume more fuel?

What is the age requirement for obtaining a driver's license now?

For C1, C2, C5, and F license categories: Applicants for small cars (C1), small automatic transmission cars (C2), small automatic transmission passenger cars for the disabled (C5), and light motorcycles (F) must be between 18 and 70 years old. 2. For C3, C4, D, E, and M license categories: Applicants for low-speed trucks (C3), three-wheeled cars (C4), ordinary three-wheeled motorcycles (D), ordinary two-wheeled motorcycles (E), or wheeled self-propelled machinery (M) must be between 18 and 60 years old. 3. For A3, B2, N, and P license categories: Applicants for city buses (A3), large trucks (B2), trolleybuses (N), or trams (P) must be between 20 and 50 years old. 4. For B1 license category: Applicants for medium-sized passenger buses (B1) must be between 21 and 50 years old. 5. For A2 license category: Applicants for tractors (A2) must be between 24 and 50 years old. 6. For A1 license category: Applicants for large passenger buses (A1) must be between 26 and 50 years old.

6

4

Share

Why does the engine self-check light not come on and the car fail to start?

When the engine self-check light does not come on and the car fails to start, this situation is generally caused by a loose connection in the engine power circuit or corrosion in the ECU wiring due to water ingress. It is recommended to seek further inspection at a professional auto repair shop. When the car engine is not functioning properly and the self-diagnostic system does not output any fault codes, it is especially necessary to rely on the inspection and judgment of the operator to determine the nature and location of the fault. Reasons for the self-check light to come on: 1. Sensor issues: Sensors include those for coolant temperature, crankshaft position, air flow, intake air temperature, and oxygen. When these sensors are damaged, have poor contact, or signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine self-check light to come on. 2. Maintenance issues: Poor engine maintenance is the most common cause of the engine self-check light coming on. Vehicles have a certain maintenance cycle, and if the owner does not perform maintenance on schedule, coupled with poor driving habits, it will increase the burden on the engine's operation. 3. Oil quality issues: Oil quality includes fuel and engine oil. If the owner does not add the appropriate oil as required, it will cause engine wear over time.

10

0

Share

What are the effects of remapping the ECU on a motorcycle?

Here is an introduction to the effects of remapping the ECU on a motorcycle: 1. Advantages: (1) Resolves engine vibration issues: Naturally aspirated engines can achieve a 5%-15% increase in horsepower and torque, with the optimal torque point responding earlier than the factory settings. As a result, the shaking problem during gear shifts in small-displacement models, especially between first and second gears, will disappear, making gear shifts smoother. (2) Improved fuel efficiency: Turbocharged models can gain 30% or more in power and torque. Additionally, factory turbocharged models typically activate the turbo at around 1800 RPM, but after ECU remapping, the turbo engages earlier, at approximately 1500 RPM. This allows torque to be delivered sooner, broadening the maximum torque output curve, thereby improving fuel efficiency compared to the factory settings. 2. Disadvantages: (1) Higher fuel quality requirements: After ECU remapping, the vehicle will require higher-quality gasoline. Using low-quality fuel may damage the vehicle. (2) Higher temperature requirements: With the ECU remapped, the engine operates at higher frequencies, and without an excellent cooling system, the engine's lifespan may be affected.

15

3

Share

What is the difference between the colors of the annual inspection stickers?

The colors of the annual inspection stickers represent different years. Generally, the annual inspection stickers follow the color sequence of yellow, green, and blue. For example, if the sticker was yellow in 2020, it would be green in 2021, blue in 2022, and then back to yellow in 2023, and so on. Starting from June 2020, electronic annual inspection stickers were implemented nationwide. Vehicle owners can check, download, and use electronic inspection stickers through the "Traffic Management 12123" APP. For vehicles that have already obtained electronic inspection certificates, there is no need to apply for or affix paper stickers at the vehicle management office or traffic police station. Traffic police will verify the vehicle's inspection status through law enforcement terminals during enforcement. Non-commercial small and mini passenger vehicles with 6 seats or fewer can enjoy an exemption from physical inspection within the first 6 years, but they still need to obtain the annual inspection sticker every two years. The annual inspection sticker can be applied for through the Traffic Management 12123 APP or the vehicle management office. For new vehicles, the annual inspection sticker can be printed at the vehicle management office when registering the license plate. For private vehicles older than 6 years, the annual inspection sticker must be obtained annually after passing the inspection at the vehicle inspection center.

5

3

Share

Where is the problem when you smell coolant in the engine compartment?

The reasons for smelling coolant in the engine compartment are as follows: The coolant has not been replaced for a long time. The service life of ordinary coolant is generally 3 years, while long-life coolant lasts only about six years. Not replacing it for a long time may cause the corrosion inhibitor in the coolant to lose its effectiveness, leading to changes in the composition ratio, which results in an odor from the coolant. Coolant overflow or leakage. When it encounters the high-temperature engine and drips onto the engine block or exhaust manifold, the coolant boils and evaporates, producing an odor. How to determine if there is a lack of coolant: Observe the coolant warning light on the dashboard. If it lights up, it is likely due to a lack of coolant, although it could also be caused by excessively high cylinder temperature. Check the coolant reservoir. If the liquid level is below the minimum mark (MIN), do not continue driving and add coolant promptly. Check the water level scale mark on the coolant tank. The normal coolant level should be between the maximum and minimum water levels. Whether there is a lack of coolant depends on the scale. If the coolant is below the minimum water level, it indicates a lack of coolant.

8

4

Share

What is the difference between engine water ingress insurance and water ingress insurance?

Engine water ingress insurance and water ingress insurance are the same. Below are the specific details about water ingress insurance: 1. Coverage: If the engine is flooded due to driving through waterlogged areas or being submerged while parked, the insurance company will cover the corresponding engine repair costs. 2. Exclusions: Damage caused by restarting the engine after initial flooding; damage or repairs resulting from incidents outside the scope of motor vehicle loss insurance; repairs necessitated by substandard work at non-insurer-approved repair shops; delays in vehicle repairs caused by the insured or the driver.

5

Share

Does driving fast or slow consume more fuel?

What is the age requirement for obtaining a driver's license now?

Why does the engine self-check light not come on and the car fail to start?

What are the effects of remapping the ECU on a motorcycle?

What is the difference between the colors of the annual inspection stickers?

Where is the problem when you smell coolant in the engine compartment?

What is the difference between engine water ingress insurance and water ingress insurance?

Why does the motorcycle engine overheat severely during the break-in period?

What Needs to Be Checked Before a Long-Distance Drive?

Can Leak Sealant Be Left in the Radiator for a Long Time?

How to Check If the Driver's License Has Been Mailed?