Warning: The coolant level should be checked when the vehicle engine is cold.
The coolant level should be between the upper and lower marks on the expansion tank body.
Warning: A slight increase or decrease in the coolant level when the engine heats up and cools down is not a malfunction. This phenomenon is due to the thermal change in the volume of the liquid.
If the coolant level on a cold engine gradually decreases, it is necessary to check the tightness of the system.
Sequence of execution of level check
1. Check for coolant leaks from the radiator drain holes and engine block, coolant temperature sensor installation locations, rubber hose connections, cooling system pipes, and their integrity.
2. Check the integrity of the expansion tank housing, engine radiators and heater.
3. We make sure that the thermostat housing is tight, as well as the connection between the coolant pump and the cylinder block.
4. Check for leaks from the coolant pump drain hole (is located at the bottom of the pump body). Liquid leakage through the pump opening indicates wear or damage to the seal.