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Can the Fuel Pump Be Cleaned?

1 Answers
DiJourney
07/28/25 9:16pm
The fuel pump can be cleaned, as it is a crucial component for a vehicle. The fuel pump determines whether the car operates normally. If the pump becomes too dirty, it may lead to issues such as poor circulation and increased fuel consumption. Therefore, cleaning the fuel pump is necessary. More details are as follows: 1. Fuel pumps can be categorized into injection-type and self-priming-type. The injection pump is mainly used in car engines to ensure the diesel engine's low-speed and high-speed operation limits, maintaining a relative balance between fuel injection and rotational speed. 2. After starting, the self-priming pump's impeller rotates at high speed, directing water flow into the volute casing. Water then enters the pump, completing the self-priming process. 3. Vehicles have very high requirements for fuel pumps. Generally, fuel pumps are produced by a few specialized manufacturers worldwide and are highly precise and essential components of a car.
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What is the difference between semi-automatic block and automatic block?

The difference between automatic block and semi-automatic block is that the automatic block does not require manual operation, while the semi-automatic block requires manual block handling procedures. Here are some introductions about automatic block and semi-automatic block: 1. Semi-automatic block: This type of block requires manual block handling procedures. Trains depart based on the display of the departure signal, but after the train departs, the departure signal can automatically close, hence it is called semi-automatic block. 2. Automatic block: Based on the train operation and block section conditions, the signal can automatically change its display. Trains run according to the signal display, and this block method is entirely automatic, hence it is called automatic block. The automatic block is a device that automatically completes the block task for running trains.
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What is the working principle of a mechanical transmission?

The working principle of a mechanical transmission includes the principles of manual transmission, automatic transmission, and AT transmission. Below are the relevant introductions: 1. Principle of manual transmission: By shifting the gear lever, the driving gear on the intermediate shaft is switched, and the combination of gears of different sizes with the power output shaft changes the torque and speed of the driving wheels. The engine's power input shaft is indirectly connected to the power output shaft through an intermediate shaft. 2. Principle of automatic transmission: An automatic transmission uses planetary gear mechanisms to change gears. It can automatically shift gears based on the degree of the accelerator pedal and changes in vehicle speed, while the driver only needs to control the speed by operating the accelerator pedal. 3. Working principle of AT transmission: The torque converter is the most distinctive component of an AT transmission. It directly inputs the engine's power and transmits torque while also serving as a clutch. The pump wheel drives the turbine to rotate through fluid, and by adding a guide wheel between the pump wheel and the turbine, the speed difference between the pump wheel and the turbine can be achieved through reaction force, enabling gear shifting and torque conversion.
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What is the speed requirement for straight-line driving in Subject 3?

The speed for straight-line driving in Subject 3 should not be lower than 40 km/h. Here are some details about the Subject 3 test: 1. Key points to note: The speed for straight-line driving must not be lower than 40 km/h, and the steering wheel movement should not exceed 3 degrees. The straight-line driving must be completed within the specified distance. If there are many vehicles ahead, you can stop briefly, wait for the vehicles ahead to move a bit, and then start again. However, stopping on a pedestrian crossing is strictly prohibited, as it will result in an immediate failure. 2. Brief introduction: Subject 3 includes the road driving skills test and the safety and civilized driving knowledge test. It is part of the motor vehicle driver's license assessment and is the abbreviation for the road driving skills and safety and civilized driving knowledge test in the motor vehicle driver's examination. The content of the road driving skills test varies depending on the type of vehicle being licensed.
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Where is the switch of the dash cam?

There are many brands and models of dash cams, and the switch positions vary slightly among different brands. Some dash cam switches are located on the side of the screen or the side of the device, while others are at the bottom or underside of the screen. The functions of a dash cam are as follows: 1. Record various status information of vehicle operation and driver actions: This includes data such as mileage and speed. Models with a GPS module can also record the vehicle's location and travel route. 2. Alarm function: According to national standards, continuous driving should not exceed 4 hours, and driving time within 24 hours should not exceed 8 hours; otherwise, it will be considered fatigue driving. Additionally, depending on the functions of the driving recorder, it may also include overspeed alerts, anti-theft alerts, and vehicle fault alerts. 3. Assist in determining liability in traffic accidents: By extracting the stored data from the recorder, it can help determine liability in traffic accidents, making the judgment more scientific.
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What to Do When Feeling Sleepy While Driving?

Solutions for drowsy driving: 1. Pull over and take a nap: If you're extremely sleepy, find a safe and legal place to pull over and take a short nap. For long-distance driving, it's most effective to rest for 20 minutes every 4 hours during the day and every 2 hours at night to avoid fatigue driving. 2. Listen to or sing songs: If you're on the highway and feel suddenly sleepy with no place to pull over, you can choose to sing loudly, especially upbeat songs that can help ward off sleepiness. 3. Chew sugar-free gum: Chewing gum keeps your mouth moving and your body engaged.
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Can a B2 License Drive a B1 Vehicle?

B2 license cannot drive B1 vehicles. The vehicle types permitted for a B2 driving license include C1 (small cars), C2 (small automatic transmission cars), C3 (low-speed trucks), C4 (three-wheeled cars), and M (wheeled self-propelled machinery). Differences between B1 and B2: 1. Vehicle types: B1 permits driving C1, C2, C3, C4, and M. B2 license allows driving heavy and medium-duty trucks, or large, heavy, and medium-sized special operation vehicles, heavy and medium-duty trucks. 2. Driver requirements: B1 requires drivers to be between 21 and 50 years old. B2 requires drivers to be at least 155 cm tall and between 20 and 50 years old.
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