Attention! With a hot engine, place a thick cloth over the filler cap before removing the radiator filler cap to prevent burns from hot coolant or steam. Remove the cover only at +90°C.
Coolant level when engine is cold (coolant temperature approx. +20°C) must be between the maximum MAX and minimum MIN·marks on the expansion tank. When the engine is warm, the fluid level may rise slightly above the maximum MAX mark.
Checking the coolant level should be done with the engine off.
To avoid engine damage, top up large amounts of cold coolant only when the engine is cold.
Slightly unscrew the cap of the expansion tank, thereby relieving excess pressure, and then unscrew the cap completely and remove it.
If the fluid level drops sharply within a short time, inspect the system to check for leaks.
Cooling system - visual leak test
1. Check the condition of the hoses by squeezing and bending them to make sure there are no porosities. Replace hardened or swollen hoses.
The coolant circulation hoses must not sit too tight on the connecting fittings.
2. Check up firmness of fastening of hoses collars. If necessary, replace the clamps with new ones.
3. Check up a condition of a sealing lining of a cover of a broad tank and be convinced of absence of damages on it.
Attention! If the coolant level is too low, it may be caused by the cap being screwed on incorrectly.
Perceptible loss of coolant and (or) the presence of oil in it, as well as the release of white exhaust gas when the engine is hot, indicate a defect in the cylinder head gasket.
Attention! Finding a leak is sometimes difficult. In this case, you should contact the workshop, where for this there is a special device with which the system is checked under pressure. At the same time, using the mentioned device, you can also check the safety valve of the expansion tank cap.
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