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How to Deal with Car Noise?

1 Answers

DeLuna

07/29/25 6:02pm

There are four solutions to car noise: 1. Engine noise: The vehicle engine is a source of noise, and its noise varies with engine speed. Solution: Install high-grade sound-absorbing foam materials on the engine cover, which can not only suppress vibrations caused by the hood but also absorb a large amount of noise, with noticeable effects. 2. Tire noise: Tire noise is generated by the friction between the tires and the road surface during high-speed driving. The level of tire noise depends on road and vehicle conditions—the worse the road conditions, the greater the tire noise. Additionally, there is a significant difference between the tire noise produced on asphalt roads and concrete roads. Solution: Tire noise is a type of structural noise, primarily caused by vibrations. The most reasonable solution is vibration control. Adding damping plates along with sound-absorbing pads can effectively reduce road and tire noise. 3. Wind noise: Wind noise occurs when the pressure of oncoming wind exceeds the sealing resistance of the car doors during high-speed driving, entering the cabin. The faster the driving speed, the greater the wind noise. Solution: Install or replace door sealing strips. Since sealing strips are made of rubber, they tend to age over time, leading to reduced sound insulation and sealing effectiveness. 4. Body structure noise: This is mainly influenced by two factors—the vibration transmission method of the body structure and the noise generated by metal components in the body due to internal and external forces. Solution: This issue rarely occurs in new cars. Check whether the screws on body components are loose. Generally, tightening the screws or replacing the parts can resolve the problem.

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What are the functions of valve guides?

Valve guides serve the following purposes: 1. The valve guide provides guidance for the movement of the valve, ensuring the valve moves in a reciprocating linear motion, enabling proper contact between the valve and valve seat, and transferring heat from the valve stem to the cylinder head. 2. The lower part of the valve guide extends into the intake and exhaust ports. To minimize airflow resistance, the extended end is designed with a conical outer shape. A clearance of 0.05~0.12mm is maintained between the valve guide and valve stem, allowing the valve stem to move freely within the guide. 3. Valve guides operate at relatively high temperatures, approximately 200°C. During valve stem movement within the guide, lubrication is solely provided by oil splashed from the valve train, making them prone to wear.

Is Waxing a Car Useful in Winter?

Waxing a car in winter is useful. More information about waxing a car in winter is as follows: 1. In northern regions, winters are cold and dry, and cars are inevitably exposed to snow, ice, and wind-blown sand, which can cause the car paint to lose its gloss prematurely. Frequent washing and timely waxing can effectively protect the car from acid snow and resist corrosion. 2. The intensity of UV rays in winter is only 20% weaker than in summer. The dry and thin winter air allows sunlight to penetrate more easily, making UV damage to the car body more threatening than in midsummer. Regular polishing and waxing can effectively resist UV rays and provide sun protection during winter.

How to Defog Car Windshield in Winter?

Methods to defog car windshield in winter are as follows: 1. Air Conditioning Defogging: Turn on the front window defogging mode, set the fan speed to maximum, switch on the A/C button, and then adjust the temperature to the lowest setting. The fog on the glass will disappear shortly. Additionally, some car models are equipped with electric heating for the rear windshield and side mirrors. Simply press the switch to activate it, and the fog will be cleared in about a minute. 2. Air Convection: Opening the windows can increase air convection, reduce the temperature difference between the inside and outside of the car, and weaken the conditions for fog formation. 3. Defogging Agent: Just spray it evenly on the glass surface and wipe it clean with a dry towel. The principle is to use surfactants to leave a protective film on the glass surface, altering the surface tension of water molecules, causing fog droplets to coalesce into larger droplets that do not obstruct vision. This method is also applicable to other car glass surfaces, especially the side mirrors. 4. Homemade Defogging Agent with Dish Soap: Mix dish soap and water in a 1:6 ratio and store it in a bottle. Spray and wipe before driving, and the effect is comparable to commercial defogging agents, though the durability is slightly inferior.

What do the fuel tank symbols E and F on the car dashboard represent?

In general, the fuel tank symbol E represents an empty tank or that the fuel is about to run out, while the fuel tank symbol F indicates that the tank is full. Additional information about the car fuel tank is as follows: 1. It is not advisable to fill the fuel tank too full. If gasoline is overfilled, the high summer temperatures and the heat generated by the car itself can cause the gasoline to expand. This may lead to gasoline overflowing through the vent hole, which can result in spontaneous combustion if exposed to an open flame. Additionally, gasoline dripping from the vent hole can corrode the car body. 2. Overfilling the fuel tank can also easily block the vent hole. Once the vent hole is blocked, the pressure inside the tank will drop below normal, causing poor fuel supply or even a complete lack of fuel. Overfilling the tank also increases the car's weight, thereby increasing fuel consumption.

Is it okay to shift to P gear after the car is turned off?

For automatic transmission vehicles, it is possible to shift to P gear after turning off the engine. However, many car models are factory-set to require shifting to P gear before the engine can be turned off; otherwise, the engine won't shut down. For automatic transmission cars, when parking and turning off the engine, the principle is to ensure that the handbrake is engaged, and it must be engaged before shifting to P gear. Here is an introduction about parking: 1. Theoretical parking operation for automatic transmission: First reduce the speed to zero, then shift to neutral, engage the handbrake, and finally shift to P gear. 2. P gear (Parking): Used for parking. It utilizes a mechanical device to lock the rotating parts of the car, preventing the vehicle from moving. When the car needs to remain stationary for an extended period or before leaving the vehicle after parking, the handbrake should be engaged, and the gear lever should be moved to the "P" position. 3. Important notes: The vehicle must be completely stopped before using P gear; otherwise, the mechanical parts of the automatic transmission may be damaged. Additionally, automatic transmission vehicles are equipped with a neutral start switch, ensuring the engine can only be started in "P" or "N" gear to prevent accidental starts in other gears that could cause the car to lurch forward unexpectedly.

What Does Vehicle Damage Assessment Mean?

Vehicle damage assessment refers to the insurance claim damage assessment, which is a crucial step in the claims process. Key considerations for vehicle damage assessment and claims: 1. Determine the repair method in advance: When certain parts of the vehicle are damaged, disagreements may arise between the policyholder and the assessor regarding whether the parts should be replaced or repaired. Generally, insurance companies prefer repairing damaged parts over replacement. If a damaged part cannot be repaired, it may be replaced. Therefore, it is advisable for the policyholder to discuss and confirm the repair method with the assessor before or during the repair process to ensure proper compensation. 2. Negotiable assessment amount: Apart from disputes over repair methods, disagreements over repair costs are common in vehicle damage assessments. A frequent scenario is when the repair shop quotes a higher repair cost than the amount assessed by the insurance adjuster. Typically, adjusters determine reasonable repair costs based on market prices. However, repair shops may charge higher prices due to procurement channels or other reasons. In such cases, if the policyholder disagrees with the assessed amount, they can communicate with the adjuster, who will then negotiate with the repair shop. 3. Conduct assessment and repairs at the same location: In addition to the above points, if the policyholder has already agreed with the surveyor to assess damages based on a 4S shop's repair standards, they should not proceed with repairs at a regular repair shop. Since 4S shops charge higher repair costs than regular repair shops, paying the 4S shop's assessed amount at a regular repair shop would result in higher expenses for the policyholder. During claims, the insurance company will reassess the damages based on the actual repair shop chosen by the policyholder, potentially leading to unnecessary financial burdens for the vehicle owner.

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