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What Are the Reasons for the Engine Not Turning Over?

1 Answers
RileyMarie
07/30/25 4:33am
Engine not turning over can be caused by the following reasons: 1. Faulty solenoid switch: Common issues with the solenoid switch include short circuits, open circuits, grounding faults in the pull-in and hold-in coils, as well as burnt contact discs and points. Whether the coils are open or grounded can be checked by measuring resistance with an ohmmeter. When the engine is operating, under the influence of the magnetic field, only the armature core rotates while the shaft does not, resulting in no torque being transmitted to the engine, causing the engine not to turn over. 2. Slipping one-way clutch: The main component of the transmission mechanism is the one-way clutch, which transmits torque in one direction only—specifically, from the starter to the engine flywheel. This prevents the flywheel from driving the starter motor at excessive speeds and causing damage after the engine starts.
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What does the red pavement on urban roads represent?

This is a modified asphalt pavement compared to traditional asphalt pavement. It incorporates new additives such as rubber, resin, polymer, and finely ground rubber powder, which customize and improve the performance of the asphalt. Roads paved with this material exhibit excellent durability, wear resistance, high-temperature resistance (reducing softening), low-temperature resistance (reducing cracking), and good water permeability. Here are the applications of this asphalt: 1. Function: The use of red and colored asphalt serves as a better visual cue for drivers, enhancing road safety. Therefore, red asphalt is increasingly being used in hazardous sections or near schools and hospitals where speed reduction is required, complementing traffic signs to remind drivers to control their speed. 2. Advantages: The new modified asphalt offers strong friction performance, high chemical resistance, low noise, reduced dust, and a more comfortable driving experience, making it highly suitable for highway curves and long tunnels. Particularly in sections prone to water accumulation, modified asphalt can enhance water permeability, preventing hydroplaning accidents caused by high-speed driving.
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Is the Mitsubishi 4a92 Engine Really That Outdated and Fuel-Consuming?

The Mitsubishi 4a92 engine is not particularly fuel-consuming; it largely depends on road conditions and vehicle usage. Below is relevant information about the engine: 1. Introduction: An engine is a machine capable of converting non-mechanical energy into mechanical energy. 2. Classification: Includes internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, among others. 3. External Combustion Engine: An external combustion engine means the fuel burns outside the engine. 4. Internal Combustion Engine: An internal combustion engine, or reciprocating piston engine, differs significantly from external combustion engines in that the fuel burns inside it. There is a wide variety of internal combustion engines, with common gasoline and diesel engines being typical examples.
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What is the speed limit for two-lane urban roads?

For two lanes in the same direction, the speed limit for the left lane should not be less than 100 kilometers per hour. For three lanes in the same direction, the leftmost lane is the overtaking lane with a speed limit of 110 to 120 kilometers per hour. The middle and rightmost lanes are driving lanes with speed limits of 90 to 110 kilometers per hour and 60 to 90 kilometers per hour, respectively. According to regulations, motor vehicles must not exceed the speed indicated by traffic signs or markings on the road. On roads without speed limit signs or markings, motor vehicles must not exceed the following maximum speeds: 1. Roads without a centerline: 30 kilometers per hour for urban roads and 40 kilometers per hour for highways; 2. Roads with only one motor vehicle lane in the same direction: 50 kilometers per hour for urban roads and 70 kilometers per hour for highways.
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Can Wuling Hongguang S be used for Huolala?

Wuling Hongguang S can join Huolala, but an operating license is required. Requirements for joining: 1. Regarding driver's license: The driver must hold a C1 or higher driver's license with at least 1 year of driving experience. 2. Regarding documents: Five documents must be complete, namely "ID card, driver's license, vehicle license, professional qualification certificate, and road transport license (operating license)." If the professional qualification certificate and road transport license cannot be provided temporarily, they must be completed within 6 months. Cities that have abolished the professional qualification certificate for small trucks under 4.5 tons may not require it. 3. Regarding registration method: Real-name authentication and on-site training are required. Registration method: You can register through the Huolala Driver app or the driver joining section on the official website.
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What is the normal fuel consumption for a ten-year-old Jetta?

Fuel consumption of 8~9 liters is normal. More information about the Jetta car is as follows: 1. Overview: Jetta is an automobile brand under FAW-Volkswagen Automotive Co., Ltd., a joint venture of the German Volkswagen Group in China. Its first product, the Jetta (Jetta-MK1), was launched in Europe in 1979. The new Jetta brand models all adopt a family-style front face design, with the sedan inheriting the classic appearance of the Volkswagen Jetta, perfectly embodying German genes and Volkswagen quality. 2. Vehicle Features: The Volkswagen Jetta was the first in China to adopt the world's most advanced 5-valve multi-point electronic fuel injection engine. With its unique product design performance and comprehensive safety technology, it formed the distinctive product characteristics of the Jetta series.
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Can Tesla Cars Really Not Brake?

Tesla cars can brake. Here are the relevant details: 1. Braking Principle: The braking principle of Tesla involves a sensor under the brake pedal. When the driver presses the brake, the sensor sends a braking signal to the computer, prompting the car to actively reduce or cut off power output. Even if the accelerator is pressed simultaneously or the autopilot is engaged, the vehicle will still come to a stop. 2. Brand Introduction: Tesla is an American electric vehicle and clean energy company founded by Martin Eberhard and Marc Tarpenning in Silicon Valley. It primarily manufactures and sells electric vehicles, solar panels, and energy storage products. Taking the Tesla Model X as an example: it is equipped with a fixed gear ratio transmission, with the engine delivering a maximum power of 395 kW and a maximum torque of 755 Nm. The front suspension uses a double-wishbone independent suspension, while the rear suspension employs a multi-link independent suspension.
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