Engine overheating
- Insufficient fluid level in the cooling system.
- The thermostat is not working.
- Clogged internal cavities of the radiator.
- Faulty radiator fan or thermoviscous coupling.
- The temperature gauge sensor or temperature gauge does not show the temperature correctly.
- The presence of an air lock with the cooling system.
- Expansion tank cap damaged.
Engine does not warm up
- Faulty thermostat.
- The temperature gauge sensor or temperature gauge does not show the temperature correctly.
- Faulty thermoviscous coupling.
External coolant leaks
- Damaged cooling system hoses or hose clamps.
- Radiator or heater core leaking.
- Expansion tank cap defective.
- The water pump seal is leaking.
- Leaky gasket installed between the water pump and the cylinder block.
- Boiling liquid when the engine overheats.
- Radiator cap leaking.
Internal coolant leaks
- Broken cylinder head gasket.
- Cracks in the cylinder head or cylinder block.
Corrosion of elements of the cooling system
- Periodic replacement of the coolant or flushing of the cooling system was not carried out.
- The use of water in the cooling system or the wrong ratio of antifreeze concentrate and distilled water when preparing the coolant.