- Low coolant level: If the coolant level is too low, it won't be able to absorb and dissipate heat properly. This can cause the engine to overheat and the coolant to overflow. Check the coolant level in the radiator or coolant reservoir and add more if necessary.
- Faulty thermostat: The thermostat is responsible for regulating the flow of coolant through the engine. If it's stuck closed, it can prevent coolant from circulating and cause the engine to overheat. Check the thermostat to see if it's opening and closing properly, and replace it if necessary.
- Blocked radiator: The radiator is responsible for dissipating heat from the coolant. If it's blocked by debris or insects, it won't be able to do its job and the coolant will overheat. Inspect the radiator for blockages and clean it if necessary.
- Faulty water pump: The water pump is responsible for circulating coolant throughout the engine. If it's not working properly, the coolant won't be able to circulate and the engine will overheat. Check the water pump for signs of wear and replace it if necessary.
- Head gasket failure: A head gasket is a seal between the cylinder head and the engine block. If it fails, it can allow coolant to leak into the combustion chambers, which can cause the engine to overheat and the coolant to overflow. Look for signs of a blown head gasket, such as white smoke from the exhaust or bubbles in the coolant. If you suspect a blown head gasket, you'll need to have it repaired by a qualified mechanic.
