1. Faulty Radiator Cap: The radiator cap is responsible for maintaining the pressure in the cooling system. If the cap is faulty or damaged, it may not be able to maintain the necessary pressure, causing the coolant to boil and overflow from the reservoir.
2. Coolant Leak: A leak in the cooling system can cause the coolant level to drop, leading to overheating and pressure build-up. Check for leaks in the radiator, hoses, water pump, and thermostat housing.
3. Faulty Thermostat: A malfunctioning thermostat can prevent the coolant from circulating properly, causing overheating. Check the thermostat to ensure that it is opening and closing correctly.
4. Clogged Radiator: A clogged radiator can restrict the flow of coolant, causing overheating. Remove the radiator and inspect it for any blockages or debris.
5. Faulty Water Pump: A faulty water pump may not be able to circulate the coolant properly, leading to overheating. Check the water pump to ensure that it is functioning properly.
6. Head Gasket Failure: A blown head gasket can cause coolant to leak into the combustion chamber, leading to overheating and pressure build-up. Check for signs of a blown head gasket, such as white smoke from the exhaust, bubbles in the coolant, or a loss of coolant.
If you have tried addressing these potential causes and the issue persists, it is recommended to consult a qualified mechanic for further diagnosis and repairs.
