Bad radiator cap: A worn-out or damaged radiator cap may not seal properly, allowing coolant to leak out.
Faulty thermostat housing:** If the thermostat housing is cracked, warped, or damaged, coolant can leak out.
Loose or damaged coolant hoses:** Over time, coolant hoses can become loose or damaged, allowing coolant to leak out.
Faulty water pump:** If the water pump seal is worn out or damaged, coolant can leak out.
Cylinder head gasket failure: A blown cylinder head gasket can cause coolant to leak from the engine block into the oil system, or vice versa.
Cracked cylinder head or engine block:** In severe cases, a cracked cylinder head or engine block can cause coolant to leak externally.
Failed water pump: If the water pump fails, it will not be able to circulate coolant properly and may cause the engine to overheat. This can lead to coolant leaking from the radiator or other parts of the cooling system.
Thermostat issues: If the thermostat is stuck closed, it will prevent coolant from flowing properly and may cause the engine to overheat. This can lead to coolant leaking from the radiator or other parts of the cooling system.