Why do cars catch fire spontaneously?
1 Answers
Electrical leaks, oil leaks, and electrical failures/short circuits can cause vehicles to spontaneously combust. The specific reasons for vehicle spontaneous combustion are as follows: 1. Electrical leaks and oil leaks: When the engine is running, the high temperature of the ignition coil can soften, age, and crack the insulation layer of high-voltage ignition wires. This makes it easier for high-voltage electricity to penetrate the insulation layer, resulting in electrical leakage. The temperature at the leakage point continuously rises, igniting gasoline leaking from the engine or carburetor, ultimately leading to fire. 2. Grounding faults: Among spontaneous combustion accidents caused by wiring issues, the primary cause is grounding faults. Particularly, many new car owners, being overly protective of their vehicles, may install anti-theft devices, upgrade premium audio systems, or modify appearances. These actions can potentially cause wiring grounding faults, leading to vehicle fires. 3. Electrical failures/short circuits: Common scenarios include starter switch contacts welding together due to sintering, preventing the starter solenoid from disengaging. This results in prolonged starting time (safe starting time for starters is 5 seconds), causing the starter to overheat and catch fire. 4. Carburetor backfire: During driving or startup, vehicles may sometimes experience carburetor backfire, which can also lead to spontaneous combustion.
