What are the hazards of excessive engine temperature?

[ValentinaMarie]

The hazards of excessive engine temperature are: 1. It leads to reduced cylinder air intake and abnormal combustion, resulting in decreased engine power or poor fuel economy; 2. Gasoline engines are prone to pre-ignition and knocking; 3. Engine components experience accelerated wear due to poor lubrication, potentially causing seizure or damage. The hazards of excessively low engine temperature are: 1. Difficulty in ignition or delayed combustion, increasing fuel consumption; 2. Increased viscosity of engine oil, leading to poor lubrication and aggravated component wear, while also increasing power consumption; 3. Unvaporized fuel at low temperatures washes over cylinder surfaces, damaging the lubricating oil film and accelerating component wear; 4. Difficulty in engine starting.