What are the causes of unstable engine idling and shaking?

Why does a vehicle eligible for exemption from inspection show an accident record when applying?

A vehicle eligible for exemption from inspection may show an accident record when applying due to untimely updates in the vehicle registration system or disqualification after an accident. Here are the specific details about vehicle inspection exemption: 1. Conditions: The vehicle must be a non-commercial vehicle; the approved seating capacity must be 6 or fewer. Starting from November 20, 2020, non-commercial mini and micro passenger vehicles with 7 to 9 seats are included in the exemption scope; the vehicle must have undergone registration procedures within 4 years from the date of manufacture; and no traffic accidents resulting in casualties should have occurred during the exemption period. 2. Regulations: New vehicles eligible for the 6-year exemption only need to undergo an on-site inspection and obtain the annual inspection mark in the sixth year. During the 6-year period, they can enjoy two opportunities for exemption from on-site vehicle inspection. During the exemption period, they only need to collect the annual inspection mark every two years without undergoing on-site inspection.

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What is the fuel consumption of the Chery A515?

The fuel consumption of the Chery A515 with a 1.5L engine is approximately 7L in urban areas and 6L on highways. The calculation formula and considerations for fuel consumption are as follows: Fuel consumption calculation formula: Divide the amount of fuel consumed by the distance traveled and multiply by 100 to get the fuel consumption per 100 kilometers. The data on fuel consumed is relatively difficult to obtain accurately. Generally, a full tank is used as the initial data, and after driving a certain distance, the tank is refilled to full, with the refueling amount provided by the gas station serving as the accurate data. Considerations for fuel consumption: It should be noted that fuel consumption varies depending on individual driving habits, road conditions, vehicle load, tire pressure, and weather. A more scientific method for calculating fuel consumption involves calculating the average. For example, after driving 10,000 kilometers, record the data from multiple refueling instances, then take the average of the highest and lowest fuel consumption values. This method yields relatively more scientific data.

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What Causes Brake Pad Noise After Car Washing?

After car washing, the reason for brake pad noise is: the car brake pads are located next to the brake discs on the wheel hubs. After washing, water on the brake pads can cause noise and may affect braking performance, but this effect disappears once the water dries. The function of brakes is to reduce speed or bring the vehicle to a stop. Their working principle involves converting the kinetic energy of the moving vehicle into heat energy through friction between the brake pads and brake drums, as well as between the tires and the ground, thereby slowing down or stopping the vehicle. Causes of brake failure include: 1. Impurities or poor sealing in the brake master cylinder; 2. Failure of the vacuum booster pump; 3. Contaminated brake fluid; 4. Leakage in the brake master cylinder or wheel cylinders; 5. Air leaks in the air reservoir or pipeline connections; 6. Severe overloading; 7. Carbonization of the brake drum; 8. Insufficient brake fluid in the master cylinder; 9. Wear of the master cylinder piston.

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What type of fuel should be used for the Mercedes-Benz GL550?

Mercedes-Benz GL550 requires 98-octane fuel, which is superior to 97-octane. The specification of 97-octane gasoline means that at least 97-octane or higher should be used. The introduction and function of gasoline are as follows: Introduction to gasoline: Gasoline, known as Gasoline (US) / Petrol (UK), is a transparent, flammable liquid with a distillation range of 30 to 220 degrees. Its main components are C5-C12 aliphatic hydrocarbons and cycloalkanes, along with a certain amount of aromatic hydrocarbons. Gasoline has a high octane number (anti-knock combustion performance) and is classified into different grades such as 90, 93, 95, and 97 based on octane ratings. Function of gasoline: Gasoline is produced by refining various gasoline components obtained from petroleum refining, including straight-run gasoline components, catalytic cracking gasoline components, and catalytic reforming gasoline components, which are then blended with high-octane components. It is primarily used as fuel for spark-ignition internal combustion engines in automobiles.

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Can I pick up my car at a 4S store on weekends?

4S stores are generally closed for car pickups on weekends because government departments are off, and the vehicle management office is also closed on Saturdays and Sundays. Temporary license plates require processing through the vehicle management office, and many procedures cannot be completed during weekends. Therefore, it is not advisable to pick up your car at a 4S store on weekends. However, if you have made an appointment in advance and selected a temporary license plate, you may be able to pick up your car on weekends. Tips for first-time car buyers: 1. Inspect the exterior of the car: Check the engine compartment and undercarriage for any repair marks, pay attention to the gaps between body panels, open the doors, and observe whether the paint inside and outside the car matches and if the car windows are intact. 2. Inspect the interior space: Check the multimedia system, storage compartments, lights, audio system, air conditioning, seats, seat belts, power windows, and other configurations. 3. Check the engine condition: Start the car and let it idle, then open the engine hood to listen for any abnormal engine sounds. After stopping the car, pull out the dipstick to check the engine oil. If the oil appears black, be cautious about the car's condition.

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What are the functions and purposes of barring the engine?

The main functions and purposes of barring the engine are to inspect the operational condition of the vehicle, ensuring its safety and service life. Below are detailed explanations regarding barring the engine: 1. Purpose of barring the engine before starting the machine pump: By barring the engine, check whether it rotates smoothly without any jamming or abnormal internal noises, preventing damage to the machine pump during startup or motor burnout due to excessive current. For some large units, it also serves to warm up and lubricate before starting, preventing localized overheating between the rotor and the body after startup, which could lead to thermal deformation. 2. Purpose of barring the engine after shutdown: For units that have just been shut down, barring is performed to prevent thermal deformation, typically after a short cooling period. For long-term shutdown units, regular barring is necessary to prevent shaft bending deformation or jamming of the machine pump rotor due to the transport of highly viscous media by the equipment. Generally, the engine is barred 540 degrees each time. 3. Barring procedure: First, the oil circuit should be cut off, and the start signal cable disconnected. Then, open the indicator valve of each cylinder to blow out any moisture, oil, or impurities inside the piston. After confirming that the diesel engine is in good condition, it can be started. Before starting the diesel engine, it is essential to inspect the oil circuit, water circuit, air circuit, and electrical circuit related to the diesel engine. If no issues are found, the diesel engine can be started.

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What are the causes of unstable engine idling and shaking?

Why does a vehicle eligible for exemption from inspection show an accident record when applying?

What is the fuel consumption of the Chery A515?

What Causes Brake Pad Noise After Car Washing?

What type of fuel should be used for the Mercedes-Benz GL550?

Can I pick up my car at a 4S store on weekends?

What are the functions and purposes of barring the engine?

What does simulated class hours mean?

Where is the door drainage of Volkswagen Tacqua located?

What is the reason for the continuous increase in high pressure when accelerating with the car air conditioner on?

Can a driver's license be renewed in a different location after expiration?