Should You Use Internal or External Air Circulation When Sleeping in a Car with the AC On?

Does Engine Ticking Noise Require Overhaul?

Engine ticking noises generally do not require major overhauls. Normal phenomena: 1. Cold start noise: Many car owners hear ticking sounds from the engine compartment during cold starts. This ticking noise occurs because the oil pump hasn't fully established oil pressure during cold start, resulting in insufficient lubrication of components. Normally, this ticking noise disappears after the engine runs for a while. 2. Charcoal canister purge valve operation noise: The charcoal canister purge valve opens after engine start, allowing adsorbed gasoline vapors to enter the combustion chamber. This reduces emissions and fuel consumption. This component may produce ticking sounds during operation. Cases requiring part replacement: 1. Engine mount deterioration or loosening: Engine mounts are rubber blocks between the engine and frame that reduce vibration and secure the engine. When these mounts deteriorate or loosen, the engine may shake and produce ticking noises. Replacing the mounts solves this issue. 2. Overly rich fuel mixture: Symptoms include difficult acceleration after start, uneven engine operation, black exhaust smoke, ticking sounds, occasional backfires, reduced power and increased fuel consumption. This is often related to carbon buildup or clogged filters, usually not requiring major repairs. Conclusion: Generally, engine ticking noises rarely lead to major overhauls. Identifying the root cause of the noise can effectively resolve the issue.

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How to Remove the ETC from the Car?

The ETC device on the car cannot be removed because there is an anti-tamper switch button on the back of the ETC device. After installation, this anti-tamper button presses against the windshield. If the device is removed, this button will automatically pop out, and the ETC service will be suspended. You will need to visit the relevant service center to reapply for positioning, installation, and activation before it can be used again. Precautions for Using ETC: The ETC transaction sensing range is 8 meters. When the vehicle in front stops, to prevent the ETC device of the front vehicle from malfunctioning or not having an ETC device at all, you should maintain a distance of more than 10 meters from the front vehicle to avoid automatic sensing and paying for the front vehicle. The recognition speed for ETC lanes is 20km/h. If the speed is too fast, the vehicle device information cannot be read, which will also result in a failed deduction. Unauthorized removal or movement of the OBU device, or if the ETC electronic tag falls off or becomes loose, will cause the electronic tag to become invalid. You can take it to the bank where the ETC card was issued or the highway service office for inspection. If the loosening or detachment is not due to human factors, it only needs to be reactivated.

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Is it necessary to replace the valve stem when changing tires for a vehicle?

It is necessary to replace the valve stem when changing tires for a vehicle. This is because the valve stem is a rubber product and is subject to aging over time. Therefore, it is advisable to replace the valve stem when changing tires. Introduction to valve stems: A valve stem is an independent valve device that opens to allow air to enter the space of a tubeless tire or inner tube, then automatically closes and seals to maintain air pressure, preventing air from escaping the tire or inner tube. Except for solid tires, all other tires or inner tubes that require inflation must use this device. Types of valve stems: Based on material, valve stems can be categorized into rubber valve stems and metal valve stems. The former is used for passenger car tire inner tubes, while the latter is mainly used for heavy-duty tire inner tubes. Rubber valve stems inevitably suffer from aging issues, where the valve body gradually cracks, deforms, and loses elasticity. When the vehicle is in motion, the rubber valve stem also swings back and forth due to centrifugal force, accelerating the aging process. To mitigate the aging problem of valve stems, metal valve stems have been introduced in the market, with steel valve stems being one of them. Although they are significantly more expensive than rubber valve stems, their service life is two to three times longer.

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What causes the sound of water entering the engine?

If the coolant is insufficient or the radiator is clogged, it can create a cavity inside the heater core. When coolant flows through this area and impacts the radiator walls, it produces a water-flowing sound. A bubbling sound, similar to blowing air through a straw submerged in water: For the power steering pump, this sound is commonly associated with the expansion tank or the mechanical hydraulic power steering pump. There are two typical scenarios where the hydraulic power steering pump makes this noise: one is a power steering fluid leak, which is common in older vehicles over time. When the fluid level drops and air gets mixed in, this sound occurs. In such cases, topping up the power steering fluid usually resolves the issue. The sound of flowing water: This sound is often heard from the heater core. It’s rare for the engine’s internal coolant passages to produce such a noise because, first, the engine’s operational noise typically drowns out the sound of flowing water, making it difficult to hear from the driver’s seat. Second, the engine’s internal cooling system is usually free of air, with coolant flowing tightly along the cooling system pipes without any water impact, so it’s unlikely to generate a water-flowing sound.

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In which year did the National IV emission standards begin to be implemented?

National IV emission standards began to be implemented on July 1, 2010, and were fully implemented nationwide until July 1, 2017, when National V standards took over. Therefore, cars produced between 2011 and 2017 were generally compliant with National IV emission standards. However, this is not entirely accurate, as the timing of emission standard implementation varied across different regions in the country. How many more years can National IV vehicles be driven? 1. Implementation of National V emission standards: Based on past experience, when National V standards were implemented, National II vehicles were phased out (i.e., forced to be scrapped). Therefore, when National VI standards are implemented, National III vehicles are likely to be phased out as well, while National IV vehicles will not be phased out until after National VII standards are implemented. The timeline for the introduction and implementation of National VII standards is unknown, but it is certain that it will be a long time from now. 2. National VI standards are very strict: After all, National VI standards have just begun to be implemented and are not yet fully enforced nationwide. Moreover, the current National VI standards are already the strictest emission standards globally, so the introduction and implementation of National VII standards will undoubtedly take a very long time. Therefore, National IV vehicles should be able to be used until their normal retirement without worrying about being forced to be scrapped due to the implementation of emission standards.

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What is the ignition point of engine oil?

The ignition point of engine oil, also known as the flash point, is generally around 200°C. Under vacuum conditions, the boiling point of gasoline is approximately 850°C. The boiling point and ignition point of engine oil vary depending on the specific oil model, which is usually labeled on the oil bottle. Vehicle owners should pay attention to this when using engine oil. Precautions for using engine oil: 1. Choose high-quality oil: Selecting premium engine oil can enhance vehicle performance and provide better lubrication. Full synthetic oils not only protect the engine and reduce oil change frequency but also save costs. Additionally, choose different oil viscosity grades according to the season: opt for higher viscosity oils in summer and oils with better fluidity in winter. 2. Monitor replacement intervals: The oil change cycle isn't fixed and depends on the owner's driving environment and habits. Typically, full synthetic oil should be changed every 10,000 kilometers, but harsh driving conditions may shorten this interval. Owners should adjust oil change timing accordingly. 3. Oil level should be slightly below the dipstick mark: When adding oil, control the quantity carefully. Excessive oil increases crankshaft resistance, reduces engine output power, and may lead to oil burning. It's best to keep the oil level slightly below the dipstick mark.

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Should You Use Internal or External Air Circulation When Sleeping in a Car with the AC On?

Does Engine Ticking Noise Require Overhaul?

How to Remove the ETC from the Car?

Is it necessary to replace the valve stem when changing tires for a vehicle?

What causes the sound of water entering the engine?

In which year did the National IV emission standards begin to be implemented?

What is the ignition point of engine oil?

What Causes the Smell of Gasoline After Starting the Car?

What is a refrigerated truck used for?

How many liters of antifreeze should be added to a car at one time?

How to Adjust Rearview Mirror Position?