How to use the gears of the Hongqi H5?

Why is the radiator still bubbling after replacing the cylinder gasket?

There are several reasons why the radiator still bubbles after replacing the cylinder gasket: 1. Common issues include engine cylinder gasket burn-out and compressor air leakage. A burned-out cylinder gasket can severely deteriorate the engine's working condition, rendering it inoperable and potentially damaging related components or parts. 2. During the engine's compression and power strokes, the upper space of the piston must remain completely sealed to prevent air leakage. If the cylinder head leaks, the compressed high-pressure gas can escape into the cylinder head bolt holes or leak from the joint surface between the cylinder head and the engine block. The leakage site will show light yellow foam, and severe leakage may produce a "hissing" sound, sometimes accompanied by water or oil leakage. Upon disassembly and inspection, significant carbon deposits can be observed on the corresponding cylinder head plane and nearby cylinder head bolt holes. If the engine cylinder communicates with the cooling water jacket or oil passage, yellow-black oil foam may float on the surface of the coolant in the radiator, or water may be visibly present in the oil pan. In severe cases, these leakage phenomena can cause water or oil to appear in the exhaust.

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What Should Novice Drivers Pay Attention to During the Probationary Period?

Here are the key points novice drivers should pay attention to during the probationary period: 1. Driving alone on highways is prohibited during the probationary period: According to Article 65, Paragraph 2 of the revised "Regulations on the Application and Use of Motor Vehicle Driving Licenses" (Order No. 123 of the Ministry of Public Security of the People's Republic of China), drivers in the probationary period must be accompanied by a licensed driver with at least three years of experience holding the same or higher-level driving license when driving on highways. The accompanying driver should sit in the front passenger seat to provide guidance. Violators will be fined 200 yuan. 2. Displaying a probationary sign is mandatory: Article 58 of the "Regulations on the Application and Use of Motor Vehicle Driving Licenses" stipulates that failure to display the probationary sign as required may result in a fine of up to 200 yuan. Therefore, even when borrowing or renting a car during the probationary period, the probationary sign must be displayed. 3. Accumulating 12 penalty points requires retaking the test: For Class C driving licenses, accumulating 12 penalty points during the probationary period will result in the revocation of the license. 4. Driving special vehicles is prohibited: Article 22, Paragraph 3 of the "Implementation Regulations of the Road Traffic Safety Law" states that drivers in the probationary period are not allowed to drive buses, commercial passenger vehicles, taxis, police cars, fire trucks, ambulances, engineering rescue vehicles, or vehicles carrying explosives, flammable and explosive chemicals, highly toxic or radioactive materials. Additionally, they are not permitted to tow trailers.

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What is the function of the shark fin on the back of a car?

Here is an introduction to the functions of the shark fin on a car: 1. The shark fin has a radio reception function, ensuring normal sound signal reception even at high speeds, allowing the driver to listen to the radio normally. 2. The shark fin is used to receive GPS signals. Many cars come with built-in navigation, and the shark fin's role is to receive GPS signals for the proper use of the navigation system. 3. The shark fin is used to receive GSM signals. The quality of phone calls in high-speed cars is closely related to the function of this shark fin. Including system upgrades and network services, all rely on this shark fin to enhance signal reception and transmission. 4. The shark fin has the function of discharging static electricity. In dry winters, the car's precision instruments need to release static electricity, and the shark fin helps discharge it, providing a protective effect. 5. Another function of the shark fin is to reduce drag and wind noise. The previous long antennas had significant wind resistance, but after replacing them with shark fins, both drag and wind noise are greatly reduced.

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Why does the car air conditioning only cool when accelerating?

The following are the possible reasons why the car air conditioning only cools when accelerating: 1. Insufficient battery voltage: The car air conditioning requires electricity. If the voltage is insufficient, it won't cool properly. When accelerating, the engine generates more electricity to power the battery, allowing the air conditioning to function normally. 2. Compressor operation status: If the compressor belt slips, it affects power transmission, causing insufficient pressure at low speeds; internal component damage or abnormal noises in the compressor due to wear can prevent effective compression; a slipping compressor clutch can also lead to insufficient compression pressure. 3. Condenser and fan condition: Severe blockage of the condenser radiator reduces its efficiency at low speeds; check if the condenser fan is faulty - abnormal noises or poor motor operation can result in insufficient airflow at low speeds. 4. Refrigerant level inspection: Check the observation window for excessive bubbles, indicating insufficient refrigerant; if no bubbles are visible after cooling, it means too much refrigerant has been added; inspect high and low-pressure pipes and connections for leaks, which require repair or replacement if found.

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How to Identify Yellow Label Vehicles?

Here are the methods to identify yellow label vehicles: 1. Judging by the year of manufacture: This is a simple way to identify yellow label vehicles. Generally, domestically produced vehicles manufactured before 1996 and imported vehicles manufactured before 1998 are classified as yellow label vehicles. The simplest criteria for identifying yellow label vehicles are: 1. Passenger cars and mini trucks with gasoline or gas fuel types registered before July 1, 2000; 2. Light trucks with gasoline or gas fuel types registered before October 1, 2001; 3. Medium and heavy-duty trucks (including semi-trailer tractors) and medium and large passenger cars with gasoline fuel types registered before July 1, 2003; 4. Medium and heavy-duty trucks (including semi-trailer tractors) and medium and large passenger cars with gas fuel types registered before September 1, 2001; 5. Mini and small passenger cars with diesel fuel types registered before July 1, 2008; 6. Mini and light trucks with diesel fuel types registered before July 1, 2009; 7. Medium and heavy-duty trucks (including semi-trailer tractors) and medium and large passenger cars with diesel fuel types registered before July 1, 2008. 2. Judging by the vehicle's exhaust emissions: Vehicles with spark-ignition engines that do not meet the National I standard or above and vehicles with compression-ignition engines that do not meet the National III standard or above are classified as yellow label vehicles. 3. Querying on the Motor Vehicle Environmental Protection Website: If owners want to know whether their vehicle is a yellow label vehicle, they can log in to the "Yellow Label Vehicle Query System" on the Motor Vehicle Environmental Protection Website, fill in the required information according to the system's instructions, and follow the steps to find out whether their vehicle is classified as a yellow label vehicle.

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What is the difference between part-time four-wheel drive and on-demand four-wheel drive?

On-demand four-wheel drive generally operates in two-wheel drive mode and automatically switches to four-wheel drive when necessary; the part-time four-wheel drive system requires manual switching between two-wheel drive, high-speed four-wheel drive, and low-speed four-wheel drive modes. Below are the specific differences between the two: 1. Different vehicle applications (1) Part-time four-wheel drive typically refers to four-wheel-drive vehicles with a manual transfer case. Most older domestic SUVs and the Jeep Wrangler use this system. These vehicles are usually equipped with solid front and rear axles, manual operation, simple structure, high reliability, and facilitate the installation of rear differential locks or front hub locks. (2) On-demand four-wheel drive is adopted by most urban SUVs. Among various four-wheel-drive systems, it achieves a balance between operational convenience and cost. They are mostly front-transverse engine configurations, with a drive shaft leading to the rear axle. Power is transmitted through a multi-plate clutch in series with the rear differential. Normally, it operates in front-wheel drive, and the computer automatically engages the clutch to drive the rear wheels when wheel slippage is detected. 2. Different technologies (1) Part-time four-wheel drive: The driver manually selects between two-wheel drive or four-wheel drive modes by engaging or disengaging the transfer case. This is the most common drive mode in SUV models. Its advantage is that it ensures both the vehicle's power and off-road capability while maintaining fuel economy. The slight drawback is that the driver needs to judge road conditions and manually operate the drive mode. (2) On-demand four-wheel drive: The switching between two-wheel drive and four-wheel drive is controlled by a computer chip. The notable feature of this system is that it inherits the advantages of full-time four-wheel drive and part-time four-wheel drive while compensating for their shortcomings. It can automatically identify the driving environment and control the switching between two-wheel drive and four-wheel drive modes based on changes in driving conditions. On low-traction surfaces such as bumpy, hilly, or winding roads, the vehicle automatically sets to four-wheel drive mode, while on flatter urban roads, it switches to two-wheel drive.

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How to use the gears of the Hongqi H5?

Why is the radiator still bubbling after replacing the cylinder gasket?

What Should Novice Drivers Pay Attention to During the Probationary Period?

What is the function of the shark fin on the back of a car?

Why does the car air conditioning only cool when accelerating?

How to Identify Yellow Label Vehicles?

What is the difference between part-time four-wheel drive and on-demand four-wheel drive?

What is the maximum speed for a newly purchased car during the break-in period?

What is the difference between synthetic engine oils 5w30 and 5w40?

What brand is gealandar tire?

Is It Necessary to Buy Auto Theft Insurance?