What Happens When the Engine Overheats?
1 Answers
When the engine temperature is too high, the engine will experience a lack of power, causing strong engine impacts and vibrations. This can lead to early damage of parts due to additional impact loads. Excessive engine temperature can also cause the piston to over-expand thermally, increasing the piston's movement resistance and even damaging the piston and cylinder walls. Causes of engine overheating include: 1. Water pump failure. When the water pump is damaged, the coolant cannot circulate in the cooling system, failing to carry away the heat generated by engine combustion. 2. Lack of coolant or use of unqualified coolant. When coolant is insufficient or completely missing, there is no cooling medium in the system to transfer engine heat, leading to overheating. Additionally, modern engines operate at temperatures higher than the boiling point of water; using water or unqualified coolant as the cooling medium can also cause engine overheating. 3. Thermostat failure. If the thermostat is damaged or stuck, the engine only operates in a small cycle, rendering the radiator ineffective for heat dissipation, resulting in low cooling intensity and engine overheating. 4. Fan malfunction. Fan issues may arise from two aspects: damage to the fan itself, such as broken fan blades, jamming, or broken fan belts; or control circuit failures that prevent the electronic fan from receiving operation signals. 5. Dirty radiator surface, poor heat dissipation. When the radiator surface is covered with dirt, heat conduction is impaired, preventing timely heat dissipation into the air and causing engine overheating.
