What Are the Reasons Why a Car Charger Fails to Charge?

What Causes Windshield Wiper Noise?

Windshield wiper noise is caused by issues with the wiper blade itself, foreign objects trapped between the wiper blade and windshield, or friction from the wiper linkage bushing. Noise caused by issues with the wiper blade: Wiper blades are made of rubber and can harden or deteriorate over time, especially in winter. If the blades no longer clean effectively, the simplest and most effective solution is to replace them with new ones. Noise caused by foreign objects between the wiper blade and windshield: When the wiper is activated, a sharp friction noise may occur between the blade and windshield. Owners should inspect and clean any debris from the wiper blade or beneath it to ensure the area remains clean. Noise caused by friction in the wiper linkage bushing: As a vehicle ages, the wiper linkage mechanism may deteriorate, the wiper arm spring may lose elasticity, and the bushing may wear out or even fall off. It is recommended to inspect the wiper arm or linkage bushing.

5

2

Share

What are the signs that spark plugs need to be replaced?

There are several precursors indicating that spark plugs need replacement: difficulty starting the engine, low power output, excessive exhaust emissions, and increased fuel consumption. Difficulty starting the vehicle: When the car has trouble starting, it may be due to excessive carbon deposits on the spark plugs or the presence of other impurities, which cause the spark plug gap to widen. This results in insufficient energy during ignition, preventing the vehicle from starting normally. Low engine power: If the engine's power output is too low, it indicates excessive carbon buildup on the spark plugs. This reduces the resistance during spark distribution, affecting the spark plugs' performance and leading to decreased engine power and reduced driving force. Excessive exhaust emissions: When spark plugs malfunction, they disrupt the normal operation of the ignition system, preventing the air-fuel mixture in the engine from burning completely. This causes harmful substances to be emitted without full combustion, resulting in excessive exhaust emissions. Increased fuel consumption: Abnormal spark plug performance can cause the ignition system to malfunction, preventing fuel from burning completely. This often leads to fuel wastage and higher-than-normal fuel consumption. How to determine if spark plugs need replacement: Keep the car idling. If the engine runs smoothly, the spark plugs are functioning properly. However, if the engine exhibits intermittent or continuous shaking accompanied by abnormal "popping" sounds, it indicates a potential issue with one of the spark plugs, signaling that they need to be replaced.

19

3

Share

What to Do When Vehicle AC High Pressure Fails to Rise?

Here are the methods to address the issue of vehicle AC high pressure failing to rise: 1. Unscrew the protective cap of the AC refrigeration system's service valve, press the valve core (check if refrigerant sprays out) to verify the presence of refrigerant in the system. Turn on the AC and check if the AC switch is functioning properly. 2. Observe whether the AC compressor clutch is working normally, if the drive belt is slipping, and if there are any abnormal noises when the AC compressor is operating. 3. Inspect the condenser to ensure airflow is not obstructed, check for any debris between the condenser and radiator (remove if necessary), and verify if the condenser fan motor is functioning correctly. 4. Through the refrigerant sight glass, observe the amount of refrigerant in the system, check for any bends or kinks in the pipeline that might cause obstruction, and inspect the condenser, refrigerant hoses, and other pipe connections for oil stains (if found, perform a leak test at those locations).

1

Share

What does 10w40 indicate about engine oil?

10W40 is the SAE standard viscosity rating for engine oil. This viscosity rating first indicates that the oil is a multi-grade oil. The 'W' stands for WINTER, and the number before the 'W' represents the oil's flow performance at low temperatures—the smaller the number, the better the starting performance in cold conditions. The number after the 'W' represents the oil's stability at high temperatures (i.e., its resistance to thinning)—the larger the number, the better the high-temperature stability. Below is relevant information about engine oil viscosity ratings: 1. Engine oils are specifically classified into 4 types for summer use, 6 types for winter use, and 16 types for all-season use. Summer oils are labeled as: 20, 30, 40, 50—the larger the number, the higher the viscosity and the higher the maximum applicable temperature. 2. Winter oils are labeled as: 0W, 5W, 10W, 15W, 20W, 25W. The 'W' symbol stands for Winter, and the smaller the number before the 'W', the lower the low-temperature viscosity, the better the low-temperature flow, and the lower the minimum applicable temperature. 3. All-season oils are labeled as: 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, 10W-30, 10W-40, 10W-50, 15W-20, 15W-30, 15W-40, 15W-50, 20W-20, 20W-30, 20W-40, 20W-50. The smaller the number representing the winter part, and the larger the number representing the summer part, the higher the viscosity and the broader the applicable temperature range.

2

5

Share

What are the symptoms of clutch slipping in an automatic transmission car?

Here are the symptoms of clutch slipping in an automatic transmission: 1. When you quickly press the accelerator, the tachometer does not increase smoothly but suddenly jumps from 2500 RPM to over 3000 RPM, yet the vehicle speed does not increase accordingly. 2. During acceleration, when you press the accelerator pedal, the engine RPM rises quickly, but the vehicle speed does not increase, and the car moves slowly. 3. Fuel consumption increases significantly. 4. When going uphill or under heavy load, the engine RPM is high, but the car feels underpowered, and the speed increases slowly. The simplest way to determine clutch slipping in an automatic transmission is to observe the gauges: at 50KM/h in 5th gear, if you press the accelerator hard and the engine RPM and speedometer do not increase proportionally, it indicates clutch slipping.

10

5

Share

What are the methods to determine engine oil burning?

Here are the methods to determine engine oil burning: 1. During maintenance, fill the engine oil to the upper limit line. Check the oil level at the next maintenance cycle. If it is below the lower limit without any oil leakage, then the engine is burning oil. 2. When the vehicle is driving or idling, if a large amount of blue smoke is emitted from the exhaust pipe when the driver steps hard on the accelerator, this indicates that the oil burning phenomenon is already quite severe. This is called acceleration oil burning. 3. In addition to blue smoke from the exhaust pipe, you may also see pulsating blue smoke coming from the oil filler port. In this case, it indicates that the engine damage is already very serious.

9

4

Share

What Are the Reasons Why a Car Charger Fails to Charge?

What Causes Windshield Wiper Noise?

What are the signs that spark plugs need to be replaced?

What to Do When Vehicle AC High Pressure Fails to Rise?

What does 10w40 indicate about engine oil?

What are the symptoms of clutch slipping in an automatic transmission car?

What are the methods to determine engine oil burning?

What are the signs that spark plugs need to be replaced?

What Causes Abnormal Noises in Cars?

What Causes the Wiper to Make Noise?

Why does the car remote key suddenly stop working?