How to Solve Fogging on Car Windows?

How to Pass the Vision Test at the Vehicle Management Office?

Here are the methods to pass the vision test at the Vehicle Management Office: 1. Method 1: Wear glasses with the appropriate prescription for the test. The vision test for a motor vehicle driver's license requires corrected vision, not necessarily uncorrected vision. 2. Method 2: Get re-examined at a hospital. If you fail the vision test at the Vehicle Management Office, you can have a re-examination at a hospital and then submit the medical examination form and relevant payment receipts to the driving school. 3. Method 3: Correct your vision. If you fail the first test, you can visit an ophthalmology hospital to correct your vision. Once your vision meets the required standards, you can take the test again.

2

5

Share

Will points be deducted if the side line exceeds 30 centimeters?

Currently, examination vehicles are equipped with GPS positioning. White road lines, margins, traffic lights, crosswalks, bus stops, etc., are all integrated into the system and fully networked. The requirement for parallel parking is 30 cm, ideally within this range. Exceeding 30 cm results in a 10-point deduction, as long as the vehicle is parked by the side and not in the middle of the road. The following are the point deductions for parallel parking: 1. First point: Stopping midway results in a 100-point deduction. 2. Second point: Driving over the lane line with the tires results in a 10-point deduction. 3. Third point: The vehicle body exceeding the line after parking results in a 100-point deduction. Although the rules state that causing the engine to stall due to improper operation deducts 10 points, stalling during parallel parking is equivalent to stopping midway, resulting in an immediate 100-point deduction.

2

1

Share

Should the Han DM use 92 or 95 octane gasoline?

The Han DM should use 92 octane gasoline, as this fuel grade is recommended in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the user manual, the fuel cap of the Han DM will also indicate the recommended grade. Generally, the fuel grade can also be determined based on the engine's compression ratio. Vehicles with a compression ratio between 8.6-9.9 should use 92 octane gasoline, while those with a compression ratio between 10.0-11.5 should use 95 octane gasoline. If the compression ratio is even higher, 98 octane gasoline is recommended. However, with the application of new technologies, the compression ratio alone cannot determine the fuel grade, as high-compression engines can also be tuned to use lower-octane fuel. Other factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology, also play a role. Generally, the higher the gasoline grade, the higher the octane rating and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the Han DM occasionally uses the wrong gasoline grade, simply switching back to the correct grade after consumption is sufficient. However, long-term use of the wrong grade can have the following effects: For vehicles designed for lower octane fuel, using a higher grade will not cause damage, but the increased octane rating may alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces both the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles designed for higher octane fuel, using a lower grade can cause engine knocking. The significantly lower octane rating lowers the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug fires, resistance is created during the upward stroke. This resistance makes the engine run very unstably. Mild knocking may only increase noise without significant engine damage, but severe knocking indicates serious engine issues, affecting driving stability and causing abnormal wear on pistons and cylinders, potentially leading to cylinder scoring.

4

0

Share

Why Can't a Diesel Truck Start After Stalling?

Issues affecting the failure to start a diesel truck are as follows: 1. Check the spark plugs: Since spark plugs are crucial to the vehicle's ignition system, and the ignition system is key to engine operation, the performance of the spark plugs directly impacts the overall working performance and efficiency of the vehicle. 2. Battery depletion: The characteristic symptoms include the starter motor beginning to turn but with insufficient speed or power, followed by the starter motor only making a clicking sound without turning. In winter, low temperatures and forgetting to turn off certain electrical devices can lead to the vehicle failing to start, especially after prolonged short-distance, low-speed use in winter, which can cause the battery voltage to drop below the rated value, making starting and normal rotation impossible. 3. Fuel flow obstruction: The characteristic symptom is the absence of oil pressure in the engine's fuel supply line. This situation often occurs on particularly cold mornings and is caused by long-term contamination of the fuel lines. At very low temperatures, water and debris can mix, blocking the fuel lines and resulting in failure to start.

2

Share

What is the urban fuel consumption of the 4.0 Patrol?

4.0 Patrol urban fuel consumption is 20 liters per 100 kilometers. Here are detailed introductions about it: 1. Power aspect: The horsepower has been increased from the original 279 horsepower to 391 horsepower, and the torque has been increased from 394NM to 552NM, which is enough to compete with the 5.6 displacement Patrol. It is equipped with a twin-screw mechanical supercharger kit, featuring high torque at low speeds and constant supercharging without attenuation. 2. Performance aspect: It operates at a constant working temperature, with smooth gear shifting and no jerking, high safety and stability, suitable for off-road vehicles in various road conditions, and it provides a comfortable and quiet driving experience.

1

2

Share

Symptoms of Using Low-Quality Engine Oil in Motorcycles?

Symptoms of using low-quality engine oil in motorcycles include the following: Initial stage after using low-quality engine oil: Initially, the motorcycle sounds normal, but after running about 300 kilometers, the valve noise becomes noticeably louder. Engine oil consumption begins: Originally, the motorcycle did not consume engine oil. However, after using that oil, the oil level inexplicably starts to decrease. Clutch begins to slip: When shifting gears while riding the motorcycle, there is a sensation of clutch plate slippage. Engine oil becomes very thin: After a short period of running with low-quality engine oil, when the dipstick is pulled out, the oil appears very thin.

5

Share

How to Solve Fogging on Car Windows?

How to Pass the Vision Test at the Vehicle Management Office?

Will points be deducted if the side line exceeds 30 centimeters?

Should the Han DM use 92 or 95 octane gasoline?

Why Can't a Diesel Truck Start After Stalling?

What is the urban fuel consumption of the 4.0 Patrol?

Symptoms of Using Low-Quality Engine Oil in Motorcycles?

Where is the engine number of Dongfeng Tianjin located?

What to Do If the Car Underbody Shield Falls Off?

How to Fill in the Vehicle Model for a Custom License Plate?

What Hazards Can Engine Overheating Cause?