What is the primary cause of engine overheating?

• A. Excessive speed while driving
• B. Insufficient coolant flow or cooling system failure
• C. Using low-quality fuel
• D. Worn-out tires

Answer: (B)

The primary cause of engine overheating is insufficient coolant flow or cooling system failure. The cooling system is designed to manage the engine's temperature by circulating coolant that absorbs heat and dissipates it through the radiator. If there is an issue, such as a coolant leak, a malfunctioning water pump, or a blocked radiator, the coolant will not flow effectively. This disruption in flow can lead to the engine running hotter than normal, resulting in overheating.

Maintaining a functional cooling system is crucial to prevent engine damage, as prolonged overheating can warp engine components and lead to costly repairs. In contrast, factors like excessive speed while driving, low-quality fuel, or worn-out tires do not directly affect the engine's cooling system or its ability to manage heat, making them less significant in contributing to overheating.