What do the letters E and F on the fuel gauge mean?

What is the reason why the engine cannot exceed 4000 RPM when idling?

If the engine cannot exceed 4000 RPM when idling, it is necessary to check the fuel system, especially the fuel pump. Possible causes include the use of poor-quality fuel or a dirty fuel tank leading to fuel line blockage. Cleaning the fuel tank and replacing the fuel pump core can resolve the issue. Another potential cause is automatic transmission slippage, accompanied by severe wear or even burning of the clutch or brake friction plates. Precautions for using a car engine are as follows: 1. Avoid driving in neutral: The engine itself has a fuel-cut function during deceleration, and driving in neutral is not conducive to fuel economy; 2. Pay attention to observation during daily use: If oil is found on the ground, determine whether there is an engine oil leak and communicate with the car 4S store in time to eliminate safety hazards; 3. For cars equipped with turbochargers: Do not turn off the engine immediately after high-speed driving or climbing a slope. Let the engine idle for 10 minutes before shutting it off. The speed of carbon deposit formation in cars with turbochargers is several times faster than that of naturally aspirated cars; 4. When brake oil is mixed with or absorbs water, or when impurities or sediments are found in the brake oil, it should be replaced or carefully filtered in time. Otherwise, it will cause insufficient brake pressure, thereby affecting the braking effect.

14

4

Share

What happens if you turn the steering wheel too early when reversing into the right parking space?

Turning the steering wheel too early when reversing into the right parking space may cause the left edge of the vehicle to press against the left boundary line of the parking space, and if done too early, the vehicle may not enter the garage. Below is an introduction to the correct method and precautions for reversing into a parking space: Correct method for reversing into a parking space: When starting to reverse, turn the steering wheel one and a half turns to the right. Observe the right rearview mirror to ensure that the distance between the top of the wheel and the right boundary line of the parking space is about 40 cm. This ensures that the right side of the vehicle will not press against the line when reversing into the parking space. Observe the left rearview mirror, and as soon as you can see the left boundary line of the parking space, immediately turn the steering wheel half a turn to the left. Continue reversing. Precautions for reversing into a parking space: First, maintain a steady speed and control the clutch properly. The vehicle speed should remain stable, not fluctuating between fast and slow, as this is not conducive to reversing into the parking space. Practice driving straight forward and in reverse to improve your control over the clutch. There are many key points when reversing into a parking space. During regular practice, note down each key point. When reversing into the parking space, quickly turn the steering wheel when the vehicle reaches the corresponding point. Turning too late can easily lead to failure. Students should focus on developing the ability to recognize key points and turn the steering wheel during regular practice, achieving coordination between eyes and hands.

17

4

Share

What is the maximum speed limit for passenger cars on highways in kilometers per hour?

According to the relevant regulations of the Road Traffic Safety Law, highways should indicate the speed limits for each lane. The maximum speed must not exceed 120 kilometers per hour, and the minimum speed must not be lower than 60 kilometers per hour. On highways, the maximum speed for small passenger cars must not exceed 120 kilometers per hour, while other motor vehicles must not exceed 100 kilometers per hour, and motorcycles must not exceed 80 kilometers per hour. As stipulated in the "Road Traffic Safety Law Implementation Regulations," if there are two lanes in the same direction, the minimum speed for the left lane is 100 kilometers per hour. If there are three or more lanes in the same direction, the minimum speed for the leftmost lane is 110 kilometers per hour, and the minimum speed for the middle lane is 90 kilometers per hour. If the speed limit indicated by road signs conflicts with the above lane speed regulations, drivers must follow the speed limit indicated by the road signs. Highway driving precautions: Pedestrians, non-motor vehicles, tractors, agricultural vehicles, electric bicycles, wheeled special machinery, full-trailer tractors, and motor vehicles with a designed maximum speed below 70 kilometers per hour are not allowed to enter highways. Additionally, drivers with a learner's permit are not allowed to drive on highways. Vehicles entering highways must be equipped with a warning sign for breakdowns. After entering the highway, motor vehicles should accelerate to at least 60 kilometers per hour as soon as possible. Vehicles entering the highway from an on-ramp must increase their speed in the acceleration lane and turn on the left turn signal. When merging into the traffic lane, they must not obstruct the normal flow of other vehicles.

2

1

Share

What is the abbreviation for Hainan license plates?

Hainan license plate abbreviation is Qiong. The regional license plate codes for Hainan Province are mainly the following: 1. Qiong A: Haikou. 2. Qiong B: Sanya. 3. Qiong C: Qionghai. 4. Qiong D: Wuzhishan. 5. Qiong E: Yangpu Development Zone. Additional information: 1. The first character of a Hainan license plate is a Chinese character representing the abbreviation of the province where the vehicle is registered, and the second is an English letter representing the prefecture-level city where the vehicle is registered. Hainan license plates are divided into 5 regions, with the first letters of the plates ranging from A to E. 2. The first character of a license plate is a Chinese character: it represents the provincial-level administrative region where the vehicle is registered, which is the abbreviation of the respective province, municipality, or autonomous region. 3. The second character of a license plate is an English letter: it represents the prefecture-level administrative region where the vehicle is registered, which is the letter code for the respective prefecture-level city, region, autonomous prefecture, or league. Generally, the ranking is determined by the provincial vehicle management office based on the status of each prefecture-level administrative region (the letter "A" is the code for the provincial capital, capital city, or central urban area of a municipality directly under the central government, and the subsequent letters are not ranked in any particular order).

3

2

Share

What does 93w on a tire represent?

93w on a tire represents the load index and speed rating of the vehicle tire. Here are the specific details: 1. 93 indicates the tire load index: The load index is a numerical value corresponding to the maximum load capacity, indicating the maximum weight the tire can bear under normal inflation conditions. 2. The maximum load and speed represented by 93w: 93 represents a maximum load of 650kg, and w indicates that the tire can withstand a maximum speed of 270km/h. 3. Car tires are one of the important components of a vehicle: Tires are in direct contact with the road, ensuring good adhesion between the wheel and the road surface, improving the vehicle's traction, braking, and maneuverability, and bearing the weight of the car.

19

1

Share

How to Remove a Car Headlight Cover?

Car headlight cover removal method is as follows: 1. Remove the headlight assembly. The headlight assembly is usually secured by clips or screws. After removing the clips or screws, the headlight can be taken out. Be careful to protect the wiring harness on the headlight during removal. 2. Use a heat gun to warm the area around the cover to soften the adhesive, then slowly pry the cover open. If a heat gun is not available, a high-power hair dryer can also be used. The functions of car headlights are as follows: 1. Accurately illuminate the road ahead. 2. Improve safety during night driving. 3. Avoid affecting the vision of oncoming drivers.

11

1

Share

What do the letters E and F on the fuel gauge mean?

What is the reason why the engine cannot exceed 4000 RPM when idling?

What happens if you turn the steering wheel too early when reversing into the right parking space?

What is the maximum speed limit for passenger cars on highways in kilometers per hour?

What is the abbreviation for Hainan license plates?

What does 93w on a tire represent?

How to Remove a Car Headlight Cover?

What does NFC/RFID car key mean?

How Many Times Can You Take Driving Test Subject 2 and Subject 3?

Is Car Shaking Related to Gasoline?

What are the main functions of an engine lubrication system?