- Insufficient coolant level
- Clogged radiator
- Faulty thermostat
- Faulty water pump
- Air pockets in the cooling system
- Failing head gasket
Steps to diagnose:
1. Check the coolant level. If it is low, add more.
2. Feel the radiator hose. If it is cold, the thermostat may be stuck.
3. Listen for the sound of the water pump. If you do not hear it, it may be faulty.
4. Check for air pockets in the cooling system. If there are any, bleed the cooling system to release them.
5. Check the head gasket. If it is failing, it may be allowing coolant to leak into the cylinders of the engine.
If you are unable to identify the cause of the problem, it is best to take the vehicle to a qualified mechanic for further diagnosis and repair.
