Are demerit points deducted from the vehicle owner or the driver's license?

When removing a car battery, should the positive or negative terminal be disconnected first?

You should disconnect the negative terminal first for safety reasons. Here is some information about car batteries: 1. The battery is a very important component in a car and is also a wearable part that requires regular replacement. 2. When the engine is not running, the battery supplies power to the car; after starting the engine, the alternator powers the car's electronic devices. 3. The battery needs to be replaced periodically. A typical car battery can last 3 to 4 years. As the battery ages, its ability to hold a charge diminishes, at which point it needs to be replaced. Before winter arrives, it is recommended to check the battery. If the battery's internal resistance and voltage do not meet standard values, it also needs to be replaced.

12

4

Share

How Often Should the Car Ignition Coil Be Replaced?

Car ignition coils are generally replaced every 100,000 kilometers. Here is some information about ignition coils: 1. As a core component in the engine ignition system, the ignition coil primarily functions to intermittently convert the vehicle's low-voltage electricity into high-voltage electricity. 2. Without the high-voltage electricity converted by the ignition coil, the combustible gas mixture in the cylinder will not be effectively ignited, causing the engine to malfunction. Below are some precautions when using the ignition coil: 1. Do not turn on the ignition switch when the engine is not running; 2. The outer surface of the ignition coil should be kept clean, and the interior should be protected from moisture to maintain its good insulation performance.

11

4

Share

What to Do When the Car Stalls After Starting?

Solutions for a car stalling after starting are as follows: 1. Stalling caused by carbon deposits. Carbon deposits usually accumulate in the throttle valve, spark plugs, cylinders, fuel lines, intake ducts, etc. They are a coking substance produced when fuel is exposed to high temperatures. General physical methods are difficult to remove them, and specialized cleaning agents are required for cleaning. 2. Poor fuel quality and clogged fuel injectors. This situation is also relatively common. Using low-quality fuel not only produces more carbon deposits but may also clog the fuel injectors, resulting in poor atomization. Additionally, low-quality fuel directly affects combustion efficiency, increasing fuel consumption. Incomplete combustion produces carbon monoxide, which can accumulate inside the car and may even lead to fatal poisoning. 3. Ignition system issues. Common faults include carbon deposits on spark plugs and insufficient ignition voltage. The former can be addressed by using a combination of physical and chemical methods to remove carbon deposits, while the latter can be resolved by replacing the spark plugs to solve the insufficient voltage problem.

18

5

Share

Can a traditional wiper blade be replaced with a frameless one?

You can replace a traditional wiper blade with a frameless one. The differences between the two are as follows: 1. The traditional wiper blade has a relatively complex structure, mainly consisting of primary and secondary brackets, rubber blades, and connectors. Most car owners choose it mainly because it is more affordable and has lower production costs. However, it is not very durable and tends to degrade over time, resulting in poorer wiping performance. 2. The frameless wiper blade does not require a bracket for support and is mainly composed of a frameless wiper strip, wiper cover, rubber blade, and plastic parts. Its main characteristics are better performance compared to traditional wiper blades and easier replacement, although the production cost of this type of wiper blade is relatively higher.

14

1

Share

What are the steps for evacuating a car air conditioning system?

The steps for evacuating a car air conditioning system are as follows: 1. Connect the high and low pressure hoses of the manifold gauge to the high and low pressure side service valves respectively, and connect the center hose to the vacuum pump. 2. Open the high and low pressure manual valves on the manifold gauge, start the vacuum pump, and observe the pointer of the low pressure gauge (process gauge), which should show vacuum. 3. After continuous evacuation for 5 minutes, the low pressure should reach 0.03MPa (vacuum degree), and the high pressure should be slightly below zero. If the high pressure gauge cannot go below the zero mark, it indicates a blockage in the system. Stop the evacuation, repair the system, and then resume evacuation. 4. After the vacuum pump operates for 15 minutes, the low pressure gauge pointer should be between 0.001~0.02MPa. If this value is not achieved, close the high and low pressure manual valves and observe the low pressure gauge pointer. If the pointer rises, it indicates a vacuum loss and a leak in the system. Stop the evacuation and resume only after repairing the leak. 5. When the system pressure approaches vacuum, close the high and low pressure manual valves and hold the pressure for 5~10 minutes. If the low pressure gauge pointer does not move, open the high and low pressure manual valves, start the vacuum pump, and continue evacuation for no less than 30 minutes.

1

0

Share

What should be paid attention to when replacing brake fluid?

When replacing brake fluid, the following aspects should be noted: 1. The criteria for replacing brake fluid are not only based on time and mileage but also on geographical location. In a vast country like ours, the conditions in southern Hainan differ from those in northern Heilongjiang. 2. In very hot areas, the general replacement cycle is either annually or every 20,000 kilometers, while in colder northern regions, it can be every 3 years or 60,000 kilometers. Additionally, always monitor the fluid level in the brake fluid reservoir; it should not fall below the minimum level. If it drops, it should be replenished promptly. 3. If brake fluid is not replaced for a long time, it will become increasingly turbid, which can lead to the formation of vapor lock in the braking system or even severe consequences like brake failure.

2

3

Share

Are demerit points deducted from the vehicle owner or the driver's license?

When removing a car battery, should the positive or negative terminal be disconnected first?

How Often Should the Car Ignition Coil Be Replaced?

What to Do When the Car Stalls After Starting?

Can a traditional wiper blade be replaced with a frameless one?

What are the steps for evacuating a car air conditioning system?

What should be paid attention to when replacing brake fluid?

What is the maintenance interval for the Highlander?

Is Haval a brand under Great Wall?

How to drain the windshield washer fluid in Haval H6?

What is the normal water temperature for a car?