What are the reasons for a car suddenly stalling and failing to start?

[VanHadley]

There are several reasons why a car may suddenly stall and fail to start: 1. Damaged spark plugs: Since spark plugs are crucial to the car's ignition system, and the ignition system is vital for the engine's operation, the performance of the spark plugs directly affects the vehicle's overall working performance and efficiency. 2. Battery depletion: The characteristic symptom is that the starter begins to turn but lacks sufficient power, eventually making only a clicking sound without turning. Low temperatures in winter or leaving certain electrical devices on can prevent the vehicle from starting, especially with prolonged short-distance, low-speed use in winter, which can cause the battery voltage to drop below the rated value, making starting and normal operation impossible. 3. Blocked fuel flow: The characteristic symptom is the absence of oil pressure in the engine's fuel supply line. This situation often occurs on extremely cold mornings due to long-term contamination of the fuel lines. At very low temperatures, water mixed with debris can block the fuel lines, resulting in a failure to start.