Why does the car dashboard light flicker on and off?

What are the causes of abnormal noises in the chassis of a BMW 7 Series?

BMW 7 Series chassis abnormal noises causes and solutions are as follows: Loose parts: Due to violent impacts or the installation of other equipment, mutual interference occurs between two components. Perform shaping repairs or replace the relevant parts to eliminate interference in that area. Loose bolts or nuts: Long-term driving on poor road conditions causes bolts to loosen; improper disassembly or installation leads to bolt damage or insufficient torque. Tighten the bolts and replace them if necessary. Driveshaft universal joint failure: Damaged dust covers and oil leaks that are not repaired in time cause abnormal wear of small bearings. Replace the new outer (inner) CV joint or universal joint.

12

5

Share

What are the causes of cylinder scuffing in car engines?

The causes of cylinder scuffing in car engines are: 1. Engine overheating due to leaks or lack of coolant in the cooling system that is not replenished in time; 2. Insufficient engine oil level, leading to loss of cylinder sealing and lubrication function; 3. Piston ring breakage, scratching the cylinder wall; 4. Piston pin retainer ring detachment, scratching the cylinder wall; 5. Piston rings getting stuck in the ring grooves due to carbon deposits, losing their sealing effect; 6. Piston pin protrusion, scratching the cylinder wall; 7. Excessive clearance between the piston and cylinder wall. Cylinder scuffing refers to deep grooves being formed on the inner wall of the cylinder, causing loss of sealing when the piston, piston rings, and cylinder wall rub against each other, resulting in reduced cylinder compression pressure and loss of power.

20

3

Share

What procedures are required for car booking?

Booking a car requires only ID card, driver's license and deposit. The following are relevant details: 1. Vehicle information: Before booking, confirm the model, chassis number, engine number, and color of the car to be purchased, especially ensuring both the car code and identification number are clearly stated to avoid any changes when picking up the car. 2. Booking contract: Before signing the contract, negotiate the price and any gifts clearly. Pay attention to the type of order when drafting the contract. Additionally, clearly specify the handling fees for insurance and purchase tax, including the deposit and pick-up time, and define the liability for breach of contract to prevent future disputes. As for the deposit, try to pay as little as possible. After completing the contract, be sure to check it to avoid any omissions. Finally, signing and leaving a phone number completes the car booking process.

1

4

Share

What is the model number of the Langdong's taillight?

The model number of the Langdong's taillight is T10. Taillights are used to alert vehicles behind that there is a car ahead during nighttime driving and to indicate the positional relationship between the two vehicles, hence they are installed on both sides at the rear of the car. The design principle of taillights is to have sufficient luminous intensity so that the taillight signal can be clearly discerned by other drivers or pedestrians even in bright daylight; during nighttime driving, the light emitted by the taillights should not cause glare or discomfort to other drivers or pedestrians. The Langdong is a compact sedan with body dimensions of 4570mm in length, 1775mm in width, and 1445mm in height, and a wheelbase of 2700mm. The Langdong uses a MacPherson independent suspension for the front and a torsion beam non-independent suspension for the rear.

1

4

Share

What are the reasons for the high-pressure common rail fuel pump not delivering oil?

Sub-shutdown switch is in the connected state; rail pressure is too low; battery voltage is too low; synchronization signal is incorrect. Here are the relevant introductions: High-pressure common rail diesel engine: A high-pressure common rail diesel engine refers to a fuel supply machine in which the generation of injection pressure and the injection process are completely separated in a closed-loop system composed of a high-pressure fuel pump, pressure sensor, and electronic control unit (ECU). High-pressure fuel pump: The high-pressure fuel pump delivers high-pressure fuel to the common rail (Rail), achieving precise control through the oil pressure in the common rail, making the pressure in the high-pressure fuel pipe (Pressure) independent of the engine speed, which can significantly reduce the degree to which the diesel engine's fuel supply pressure varies with engine speed.

5

2

Share

What are the evaluation criteria for used cars?

Evaluation is generally based on the car's purchase age, mileage, exterior condition, interior decoration, and main components. Below is a relevant introduction: 1. Exterior inspection: Check the exterior of the used car, usually by observing the car's paint surface from one direction (clockwise or counterclockwise) for significant dents and color differences. You can use light and reflection principles to assist in evaluating the paint's gloss. 2. Evaluation techniques: If a consumer is interested in a specific model, they can compare it with other used car markets, appropriately highlighting the car's shortcomings and emphasizing the advantages of other cars to 'reasonably' lower the price. However, avoid comparing different dealerships within the same market. When comparing models of the same grade and year but different brands, with similar configurations and no significant difference in market share, it's generally acceptable to praise one while downplaying the other. Minor flaws such as exterior scratches, aging parts, interior stains, or damages can be 'amplified' for negotiation purposes.

15

3

Share

Why does the car dashboard light flicker on and off?

What are the causes of abnormal noises in the chassis of a BMW 7 Series?

What are the causes of cylinder scuffing in car engines?

What procedures are required for car booking?

What is the model number of the Langdong's taillight?

What are the reasons for the high-pressure common rail fuel pump not delivering oil?

What are the evaluation criteria for used cars?

Should car insurance be purchased one month in advance?

Where is the OBD interface of the Buick Excelle?

What Causes the Volkswagen Airbag Light to Illuminate?

Where is the light switch of Borgward BX5?