What are the reasons why a sedan won't start?

[MacLyla]

The reasons why a sedan won't start are: 1. Carbon buildup in the car; 2. Weak ignition energy from the spark plugs; 3. Battery depletion; 4. Insufficient low pressure in the fuel line; 5. A broken catalytic converter causing exhaust blockage or external force deforming the exhaust pipe, leading to blockage; 6. Mismatched engine timing. Many car engines use timing belts, and replacing the generator belt on certain engine models may cause the belt to skip teeth, resulting in the car not starting. The solutions for a sedan not starting are: 1. Straighten the steering wheel and then start the car; 2. Clean the throttle body, fuel injectors, and intake tract of carbon buildup; 3. Check the ignition system and fuel supply system; 4. Regularly replace wear-prone components.