What are the reasons why the car won't start?

[MaggieFitz]

The reasons why the car won't start: 1. Severe carbon buildup inside the vehicle's engine, making it difficult to start; 2. Issues with the vehicle's ignition system, requiring inspection of the spark plugs and high-voltage wires. Abnormal operation of the ignition system can lead to difficulty in starting the vehicle; 3. Unstable fuel pressure in the vehicle's fuel system, where the fuel pump fails to supply fuel properly to the vehicle, resulting in poor fuel atomization or inability to open the fuel injectors, preventing the vehicle from starting; 4. The car battery is dead, the vehicle has been parked for a long time, the battery has reached the end of its lifespan, the generator is damaged, insufficient or leaking electrolyte, blown fuses, corroded battery terminals, or overuse.