What Causes a Car Starter to Spin Freely?

Why Shouldn't You Coast a Car in Neutral Gear?

Here are the reasons why coasting a car in neutral gear is not recommended: 1. When coasting in neutral, the engine stops running, and the air compressor ceases to operate. Since the car frequently needs to brake, the compressed air in the air reservoir continuously depletes, which may lead to brake failure. 2. It can easily damage the transmission. Most transmissions use rolling bearings extensively. While coasting in neutral, the second shaft of the transmission rotates, but the constant-mesh gears do not. As a result, these gears cannot agitate the gear oil in the transmission, causing bearings (especially those positioned higher and relying on splash lubrication) to lack reliable lubrication, leading to premature wear of bearings and gears. 3. Some drivers, aiming to save fuel, depress the clutch and let the engine stall to coast. After descending a slope, they suddenly release the clutch pedal to restart the engine. At this point, power is transmitted in reverse: drive wheels → half shafts → differential → reduction gear → drive shaft → transmission second shaft → synchronizer → clutch. The sudden engagement of the clutch with the stationary flywheel subjects the clutch to enormous impact loads, which can easily damage the clutch friction disc.

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How many kilometers can a run-flat tire travel after a puncture?

According to the characteristics of run-flat tires, after a puncture, they can still maintain a speed of 80km/h, allowing you to drive for about an hour and cover a distance of nearly 80 kilometers. Here is some information about run-flat tires: Advantages of run-flat tires: In the event of a tire leak, even if the air pressure inside the tire is completely lost, you can continue driving at a speed of 80 km/h without having to replace the tire immediately. Disadvantages of run-flat tires: In terms of tire quality, due to the thicker sidewalls, run-flat tires of the same specifications are heavier than ordinary tires, which to some extent can reduce the performance of the car.

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What are the contents of Subject 1 and Subject 4?

Both subjects are theoretical exams. Subject 1 focuses on driving knowledge, while Subject 4 emphasizes safety knowledge. The questions in Subject 4 often do not require rote memorization, as the correct answers can be deduced through practical reasoning. Subject 1, however, includes more memory-based content such as traffic police hand signals and road sign markings. In this regard, Subject 1 is relatively more challenging. Exam content for Subject 1: Basic knowledge of motor vehicles; laws, regulations, and road traffic signals; fundamentals of safe and civilized driving; basic knowledge related to motor vehicle operation. Exam content for Subject 4: Requirements for safe and civilized driving operations; safe driving knowledge under adverse weather and complex road conditions; emergency handling methods for situations like tire blowouts; and knowledge on post-traffic accident procedures.

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What is the minimum ground clearance of the Lynk & Co 03?

The minimum ground clearance of the Lynk & Co 03 is 120mm. The following are the characteristics of minimum ground clearance: 1. Minimum ground clearance refers to the distance between the lowest point of the vehicle (excluding the wheels) and the supporting surface when the vehicle is fully loaded and stationary, which is used to characterize the vehicle's ability to pass over obstacles such as stones and stumps without collision. 2. The smaller the ground clearance, the worse the ability to pass over obstacles. Sedans generally travel on flat urban roads, so they have a small ground clearance. Off-road vehicles have a larger minimum ground clearance to pass over larger obstacles. 3. The larger the minimum ground clearance, the stronger the vehicle's ability to pass over obstacles or uneven ground, but the higher the center of gravity, which reduces stability; the smaller the minimum ground clearance, the weaker the vehicle's ability to pass over obstacles or uneven ground, but the lower the center of gravity, which can increase stability.

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Why can't the car key be remotely controlled after replacing the battery?

After replacing the battery, the car key may not be able to be remotely controlled due to the following reasons: the remote control is damaged; the spare key has been stored for a long time, and the battery is depleted, causing the remote control to be underpowered; the battery was not installed in time after being removed during replacement; or a momentary short circuit occurred when removing or installing the battery. Below are some functions of the car key: Remote window opening function: This is a very practical hidden feature of the car key. In summer, when the car has been exposed to the sun and the windows are closed, the interior can become stuffy and emit unpleasant odors. In such cases, holding down the unlock button can open the windows for ventilation. Automatic trunk opening: The car trunk is a great place to store various items, and sometimes after parking and turning off the engine, the driver may remember something left in the trunk. The remote car key can be very useful here—holding down the trunk unlock button can open the trunk. Opening only the driver's door: Sometimes, the car may be parked in a crowded area, and using the remote key to unlock all doors can pose a certain risk. However, when only the driver is in the car, the remote key can be used to open only the driver's door.

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Can You Make a U-Turn When the Left-Turn Signal Is Red?

Whether you can make a U-turn when the left-turn signal is red depends on whether there is a no-left-turn sign at the intersection and whether there is a no-U-turn sign at the gap. The following are detailed explanations: No-left-turn sign at the intersection: If there is a no-left-turn sign at the intersection, you cannot make a U-turn when the left-turn signal is red; if there is no no-left-turn sign at the intersection, you can make a U-turn when the left-turn signal is red. No-U-turn sign at the gap: Before reaching the stop line, if there is a dashed-line gap in the middle of the road, you can make a U-turn as long as there is no no-U-turn sign at the gap. If there is a no-U-turn sign or a solid line at the gap, you must proceed to the stop line position to make a U-turn. When making a U-turn, be careful not to cross the intersection stop line or the central solid yellow line, and the very important prerequisite is not to affect the passage of vehicles and pedestrians. When making a U-turn, you must yield to oncoming vehicles. If you do not follow the regulations, you will be fined and deducted 3 points.

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What Causes a Car Starter to Spin Freely?

Why Shouldn't You Coast a Car in Neutral Gear?

How many kilometers can a run-flat tire travel after a puncture?

What are the contents of Subject 1 and Subject 4?

What is the minimum ground clearance of the Lynk & Co 03?

Why can't the car key be remotely controlled after replacing the battery?

Can You Make a U-Turn When the Left-Turn Signal Is Red?

Which car brand features a snake and cross in its logo?

Is it okay to start an automatic transmission vehicle in P gear?

Why does the Q5's brakes squeak?

What are the body dimensions of the GAC Trumpchi GM8?