What are the reasons for a car suddenly failing to start after refueling?

[Rogers]

The reasons for a car suddenly failing to start after refueling are as follows: 1. Poor combustion; 2. Low ignition energy: excessive spark plug gap, aging ignition coil, aging or leakage of the spark plug's high-voltage wire; 3. In closed-loop control vehicles, the minimum operating temperature of the oxygen sensor is 370 degrees Celsius. If the car has just been started, the temperature in the exhaust pipe may not reach 370 degrees Celsius, causing the oxygen sensor to not function. At this time, the ECU makes incorrect judgments, leading to errors in controlling the air-fuel mixture and ignition timing through the actuators, thereby reducing the car's power output and causing shaking; 4. Carbon deposits on the valves and intake passages; 5. Malfunctioning water temperature sensor; 6. Dirty air flow meter, resulting in reduced air intake; 7. Poor working condition of the EGR (Exhaust Gas Recirculation) valve, introducing exhaust gas during idle; 8. Poor fuel quality, failing to meet the required heat value.