What is the Basic Principle of a Manual Transmission?

Does Car Interior Modification Affect Annual Inspection?

Annual inspection refers to the annual or biennial safety inspection of a vehicle, which includes a comprehensive check of components such as the horn, brakes, axle weight, chassis, ignition system, lighting system, exhaust system, license plate installation, and more. Generally, modifications to the car interior do not affect the annual inspection. Here are some key points to note during the annual inspection: 1. Before the vehicle undergoes the exhaust emission test, check the emissions at mobile inspection stations during operation on relevant environmental websites. 2. Enhance the inspection of fuel tank safety by increasing pressure checks on the fuel tank cap and fuel inlet. 3. For diesel vehicles, in addition to the free acceleration method for exhaust emission testing, a load deceleration test is added. If the wheel-side power is less than 40% of the rated power, the vehicle will be deemed unqualified. 4. During the exhaust emission test, OBD dynamic monitoring will be used throughout the process. This involves plugging the device into the vehicle's computer data connection port under the steering wheel. If there is any fault alarm related to exhaust emissions or if the OBD cannot connect properly to the vehicle's computer, the vehicle will be judged as failing the exhaust emission test.

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Should the Oil Pan Be Replaced When Changing Transmission Fluid?

Transmission fluid requires the replacement of the oil pan. As a core transmission component, the transmission undergoes mechanical wear, and the transmission fluid also degrades over time. Therefore, replacing the fluid, oil pan, and filter is essential. The methods for changing transmission fluid are as follows: 1. Gravity Drain. The method and principle are similar to changing engine oil—loosen the fastening nut at the bottom of the oil pan, and the transmission fluid will automatically drain from the oil drain hole. 2. Machine Flush. New transmission fluid is added to a flushing machine, which connects to the transmission's fluid lines. The new fluid pushes out the old fluid under pressure, resulting in a cleaner flush of the fluid lines. The more new fluid is used, the cleaner the lines become. A machine flush typically requires about 10 liters of fluid and takes longer, usually around an hour. 3. Oil Pan Removal. This method allows for cleaning the oil filter and flushing the oil pan, addressing the issue at its root. However, the disassembly process is more complex.

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How to Deal with the Illuminated Three-Way Catalytic Converter Warning Light?

When the three-way catalytic converter warning light in a car illuminates, the first step is to decode the car's computer system. If the light remains on after decoding, it indicates that the issue is not with the computer but likely a damaged oxygen sensor. In this case, it is necessary to visit a repair shop or a 4S dealership to have professionals repair or replace the oxygen sensor. Relevant information about the three-way catalytic converter is as follows: 1. The automotive three-way catalytic converter is an external purification device in the car's exhaust system. It is called 'three-way' because it can purify three types of exhaust gases. 2. The three-way catalytic converter contains a purifying agent. When high-temperature exhaust gases pass through it, certain oxidation-reduction chemical reactions occur with CO, HC, and NOx gases in the exhaust. This process oxidizes CO into carbon dioxide gas at high temperatures, oxidizes HC compounds into water and carbon dioxide, and reduces NOx into nitrogen and oxygen, thereby achieving purification.

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What is the main purpose of crankcase ventilation?

The main purposes of crankcase ventilation are: 1. To prevent engine oil from deteriorating. 2. To prevent leakage from the crankshaft oil seal and crankcase gasket. 3. To prevent various oil vapors from polluting the atmosphere. 4. To prevent excessive crankcase pressure, extend the oil change interval, reduce component wear and corrosion, and prevent engine oil leakage, crankcase ventilation is necessary. When the engine is running, some combustible mixture and exhaust gases leak into the crankcase, which can dilute the oil, degrade its performance, and reduce lubrication effectiveness. If the exhaust gases contain water vapor and sulfur compounds, they can form sulfuric acid, leading to corrosion of engine components. Therefore, crankcase ventilation is essential.

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Does the six-year exemption from inspection include the sixth year?

The six-year exemption from inspection includes the sixth year. In the sixth year, the vehicle needs to undergo an on-site inspection. The six-year exemption only means that the vehicle does not require an on-site inspection, but the owner must collect the inspection mark from the traffic management department every two years. Vehicles eligible for the six-year exemption include non-commercial large, small, and mini cars, as well as non-commercial small and mini passenger vehicles. If the vehicle does not fall into these categories, it must still undergo on-site inspections on time. Vehicles eligible for the six-year exemption policy are: 1. Vehicle types: non-commercial large, small, and mini cars, as well as non-commercial small and mini passenger vehicles. The term "non-commercial" in this policy does not include: police cars, fire trucks, ambulances, engineering rescue vehicles, vehicles converted from commercial to non-commercial use, taxis converted to non-commercial use, two-wheeled motorcycles, and three-wheeled motorcycles. 2. Age: Vehicles that have not been registered for more than four years from the date of manufacture are not eligible for the six-year exemption policy. 3. Accident history: Vehicles that have been involved in accidents resulting in casualties are not eligible for the exemption policy.

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Can Car Batteries Be Repaired?

Car batteries can be repaired if the damage is not severe. However, not all batteries are repairable—it depends on the extent of the damage. Physical damage such as broken terminals, cracked grids, perforated plates, or bulging usually cannot be directly repaired and requires specialized techniques and equipment. Repair methods vary depending on the battery's condition and include the following approaches: 1. Series Battery Repair Method: Suitable when the nominal voltage of a single battery is below 12V. 2. Output Combination Method: Used for batteries that have been unused for a long time, suffer from severe self-discharge, or have significant sulfation. These cannot be fixed by simply adding water or recharging. 3. Heating Method: Necessary for batteries that have been unused for an extended period and require urgent repair, especially when the electrolyte has dried up. 4. Strong Current Repair Method: Involves applying a sustained high voltage or high current during charging to repair the battery, typically used when pulse repair methods prove ineffective.

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What is the Basic Principle of a Manual Transmission?

Does Car Interior Modification Affect Annual Inspection?

Should the Oil Pan Be Replaced When Changing Transmission Fluid?

How to Deal with the Illuminated Three-Way Catalytic Converter Warning Light?

What is the main purpose of crankcase ventilation?

Does the six-year exemption from inspection include the sixth year?

Can Car Batteries Be Repaired?

How to Lift the Wiper Blades on the New Tiida?

What is the symbol for China's National VI vehicle emission standard?

How to Replace the Battery in a Honda Accord Remote Key?

How to Replace Brake Pads on a Focus?