Warning! The coolant level should be checked on a cold engine.
The coolant level must be between the upper and lower marks on the expansion tank housing.
Warning! A slight rise or fall in the coolant level as the engine warms up and cools down is not a malfunction. This is due to the thermal change in the volume of the liquid.
If the coolant level on a cold engine gradually drops, the system must be checked for leaks.
Execution sequence
1. We check the absence of fluid leakage from the drain holes of the radiator and the engine block, the installation sites of the coolant temperature sensors, the connections of the rubber hoses of the cooling system, as well as their integrity.
2. We check the integrity of the body of the expansion tank, engine radiators and heater.
3. We are convinced of the tightness of the thermostat housing, as well as the connection of the coolant pump and the cylinder block.
4. We check the absence of fluid leakage from the drain hole of the coolant pump (located at the bottom of the pump housing). Leakage of fluid through the hole indicates wear or damage to the stuffing box.