Recognition feature |
Reason/Features |
| A. Coolant is added regularly. | Coolant enters the combustion chamber in small volumes. This condition can last for a long time without any signs. |
| B. Significant loss of coolant. When the engine is hot, a white plume of exhaust gas is also released. | A large volume of coolant penetrates into the combustion chamber, where it turns into steam and exits as "water vapor" from the exhaust pipe. |
| IN. Air bubbles rise from the open expansion tank, and when the shut-off cap is opened, the coolant under pressure splashes out of the tank or radiator. | The engine injects exhaust gases into the cooling system. The vent smells of exhaust gases. |
| G. A film of iridescent colours floats on the coolant. | Engine oil has entered the cooling system. |
| D. A greyish emulsion appears on the dipstick, the engine oil is riddled with water bubbles. | Coolant has entered the engine oil. The cylinder head gasket or cylinder head is defective. Diagnose the damage immediately. Tow the vehicle to a workshop for repair. Caution: Water in the engine oil will damage the bearings. |
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