What is the noise test value of the 2021 Honda CR-V?

Why is it necessary to change car engine oil?

Reasons for changing car engine oil are as follows: 1. Engine oil generates impurities during lubrication: During the lubrication process, engine oil is gradually consumed, producing impurities that affect its lubricating performance, hence requiring regular replacement. 2. Prolonged failure to change oil leads to reduced cooling effectiveness: Cooling is one function of engine oil, and after extended use, its cooling capability diminishes. 3. Not changing oil results in decreased sealing performance: Due to prolonged use and heating, chemical reactions inevitably occur in the oil, reducing its sealing properties. 4. Engine oil gradually depletes during use: When the piston moves downward, a thin oil film forms on the cylinder wall. During high-speed operation, some oil is drawn into the combustion chamber and burned along with the air-fuel mixture.

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What to Do When the Inspection Validity Period of the Vehicle License Expires?

The inspection validity period of the vehicle license has expired, and you need to go to the inspection station for inspection as soon as possible. Below is relevant information about the vehicle license: 1. Introduction: The motor vehicle license is the legal document that permits the vehicle to drive on roads within China. The vehicle license consists of three parts: the cover, the main page, and the supplementary page. The front of the main page contains the stamped core, while the back has a photo of the vehicle, sealed in plastic. The supplementary page is the stamped core. The text on the front of the main page is in black. 'People's Republic of China Motor Vehicle License' is in 12pt bold font, centered; other texts include 'License Plate Number', 'Vehicle Type', 'Usage Nature', 'Owner', 'Address', 'Brand Model', 'Engine Number', 'Vehicle Identification Number', 'Registration Date', 'Issuance Date', etc. The text on the front of the supplementary page is also in black, including 'License Plate Number', 'Approved Passenger Capacity', 'File Number', 'Curb Weight', 'Gross Weight', 'Approved Load Capacity', 'External Dimensions', 'Permitted Towing Gross Weight', 'Remarks', 'Inspection Record', etc. 2. Function: The 'Motor Vehicle License' held by the driver records many important details, such as the license plate number, owner's name, model category, engine and chassis numbers, load capacity or passenger capacity, initial registration date, and annual inspection records. The 'Motor Vehicle License' is unique, meaning for any given vehicle, there is only one set of engine and chassis numbers and only one license plate number.

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What Does Insufficient Oil Pressure Mean?

When the engine oil pressure is insufficient, the main reasons are as follows: 1. The engine oil storage is too low, causing the lubrication system to have no oil or insufficient oil: refill the oil in time to ensure sufficient oil storage. 2. The oil is dirty or too viscous, preventing the oil pump from effectively sucking and pumping the oil: the oil needs to be replaced promptly. 3. The oil is too thin or becomes thin due to high engine temperature: thin oil may leak from the gaps between the engine's friction pairs, leading to insufficient oil pressure. It is necessary to replace the oil or repair the cooling system in time. 4. The oil pressure sensor is damaged: the normal oil pressure range should be maintained between 150～350kPa.

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How to Solve Gear Grinding in Cars?

Gear grinding is essentially the direct collision between two metal gears, which ultimately leads to accelerated wear on the gear teeth. Over time and with frequent occurrences, the originally right-angled gear teeth become rounded, resulting in incomplete engagement after shifting. The solutions for gear grinding in cars are as follows: 1. First, bring the car to a complete stop before shifting gears. 2. Then, depress the clutch pedal fully. Measures to avoid gear grinding include: 1. Inside a manual transmission, there is a crucial component called the 'synchronizer.' The synchronizer's role is to match the speed of the gear being shifted into with the output gear's speed during a shift, preventing gear grinding. 2. When reversing, it is necessary to bring the vehicle to a complete stop to reduce the speed difference between the power output and the reverse gear, ensuring smooth engagement without gear grinding.

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What are the causes of body vibration when the vehicle speed is between 60 and 80?

When the vehicle speed is between 60 and 80, the causes of body vibration are as follows: 1. It is caused by the aging or damage of the engine or transmission mount pads. Replacement can eliminate the issue. 2. Damage to the chassis half-shaft or drive shaft; this mostly occurs during acceleration or deceleration conditions. 3. The tire and rim require dynamic balancing, or the tire may be aging and deformed, or the rim may be deformed. Perform tire dynamic balancing as needed to check the condition of the tire and rim. When the car accelerates from 60 mph to 80 mph, the front body vibrates, but it does not vibrate when the accelerator is not pressed, nor does it vibrate at other speeds. This is caused by excessive clearance in the front suspension ball joint or connecting components, which creates vibration at a certain frequency. It is necessary to go to a repair shop to adjust the toe-in and front wheel alignment.

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How to reset the tire pressure warning on Dongfeng Fengshen AX7?

Dongfeng Fengshen AX7 tire pressure warning reset methods are as follows: Abnormal tire pressure: The system typically triggers a warning when pressure falls below 1.8bar or exceeds 3.0bar. In this case, tire inspection and pressure adjustment are required. Tire pressure monitoring not reset: After inflating the tires, if the tire pressure monitoring system isn't reset promptly, it continues to record the previous data, causing the tire pressure warning light to illuminate. Simply perform a tire pressure reset to resolve this. Damaged tire pressure sensor: The tire pressure sensor, which monitors tire pressure, is directly installed inside the tire and connected to the tire inflation valve. If the sensor is damaged during driving (e.g., by hitting a curb), it will trigger the tire pressure warning light. For sensor damage issues, replacement with a new component is the only solution. Tire pressure monitoring automatically checks tire pressure in real-time while driving, alerting drivers to leaks or low pressure to ensure driving safety.

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What is the noise test value of the 2021 Honda CR-V?

Why is it necessary to change car engine oil?

What to Do When the Inspection Validity Period of the Vehicle License Expires?

What Does Insufficient Oil Pressure Mean?

How to Solve Gear Grinding in Cars?

What are the causes of body vibration when the vehicle speed is between 60 and 80?

How to reset the tire pressure warning on Dongfeng Fengshen AX7?

Are Oil Filters Universal?

What are the parameters in the car wheel hub model size chart?

How to Jump Start a Dead Battery?

Is Hill Start Assist Automatically Activated?