What are the common causes of car spontaneous combustion?

[MilaRose]

Car spontaneous combustion can be caused by electrical leakage, grounding issues, fuel leakage, electrical component failure, and short circuits. Below is a partial introduction to the causes of car spontaneous combustion: 1. Electrical Leakage: When the engine is running, the high temperature of the ignition coil can soften, age, or crack the insulation layer of the high-voltage ignition wires, making it easier for the high-voltage electricity to penetrate the insulation. This results in electrical leakage, causing the temperature at the leakage point to continuously rise and ignite leaked gasoline from the engine or carburetor, ultimately leading to a fire. 2. Grounding Issues: Among self-ignition accidents caused by circuit failures, grounding issues are the most common cause. Many new car owners, eager to protect their vehicles, install anti-theft devices, upgrade audio systems, or modify the car's appearance. These actions can lead to improper grounding of wires, potentially causing the vehicle to catch fire. 3. Fuel Leakage: Leaked gasoline is a highly dangerous flammable substance. 4. Electrical Component Failure and Short Circuits: Common issues include the starter switch contacts welding together due to overheating, preventing the starter solenoid from disengaging. This leads to prolonged starting times (the safe starting time for a starter is 5 seconds), causing the starter to overheat and catch fire.

[Katie]

I've been driving sedans for many years and found that the most common cause of spontaneous combustion is electrical system failure, especially in older cars where wiring ages and short-circuits. Once, my car almost caught fire because the insulation on the aged wires was damaged, sparking when it touched the metal parts of the engine, igniting oil residue. This issue worsens in hot weather as heat accelerates wire oxidation. Other causes include poor battery contact and charger overload. During regular maintenance, it's best to inspect wiring harnesses, replace worn parts promptly, and avoid parking under the scorching sun for extended periods. In summer, when temperatures inside the car soar, leaving lighters or power banks inside can also become ignition sources, so clearing out clutter when parking is crucial. Remember, prevention is better than cure; keeping circuits clean and safe significantly reduces risks.

[StValentina]

As a car enthusiast, I often discuss spontaneous combustion issues, with fuel leakage being one of the key factors. Many cases show that fuel line cracks or improper fuel tank sealing cause gasoline to drip onto the engine, instantly igniting when encountering the high-temperature exhaust system. This is especially true for modified vehicles, such as those with altered exhaust pipe positions, where improper distance adjustment can create hidden dangers. My friend made a modification mistake, resulting in excessive oil pressure and leakage, nearly burning his beloved car. Additionally, leaked engine oil from the crankcase or cooling system can easily accumulate in the engine bay, increasing the risk of fire. Preventive measures include regularly checking fuel lines, replacing aging parts, and ensuring any modifications are performed by professionals. Avoid keeping flammable items in the car, such as perfume or alcohol bottles, and park away from heat sources like grills. Develop the habit of glancing under the chassis before each start-up and immediately repairing any oil stains found.

[EmiliaRose]

Having driven sedans for decades, common causes of spontaneous combustion stem from maintenance neglect, such as insufficient coolant or a clogged radiator leading to overheating. Once a car's temperature goes out of control, the temperature under the hood soars, igniting flammable materials like insulation cotton. I personally experienced an oil filter seal aging and leaking oil, which accumulated heat and eventually caught fire. Older vehicles are more prone to such incidents, especially when parked in poorly ventilated garages or confined spaces. Simple maintenance like regular oil changes and cleaning radiator fins can prevent this. Always pay attention to the temperature warning light on the dashboard—never ignore it.