Contents: 24. Engine overheating ⇓ 25. Engine overcooling ⇓ 26. External fluid leakage ⇓ 27. Internal leak ⇓ 28. Coolant loss ⇓ 29. Poor fluid circulation ⇓
24. Engine overheating
1. Low coolant level (chapter 1).
2. Dirt in the radiator tubes, the radiator core is clogged (chapter 3).
3. Thermostat is faulty (chapter 3).
4. The fan electric drive is faulty (chapter 3).
5. The radiator cap does not hold the required pressure (chapter 3),
6. The ignition timing is set incorrectly (chapters 1 and 5).
25. Engine overcooling
1. The thermostat is faulty (chapter 3).
2. The engine temperature sensor is faulty (chapter 3).
3. The fan electric drive circuit is faulty (chapter 3).
26. External fluid leakage
1. The hoses are damaged (chapters 1 and 3).
2. The water pump is faulty (chapter 3).
3. The radiator core or expansion tank is leaking (chapter 3).
4. The cylinder block technological plugs or the block drain plug are leaking (chapter 2).
27. Internal leak
1. The cylinder head gasket is faulty (chapter 2).
2. Crack in the block or cylinder head (chapter 2).
28. Coolant loss
1. Too much fluid in the system (chapter 1).
2. The liquid boils away due to overheating (chapter 3).
3. External or internal leakage (chapter 3).
4. The radiator cap is faulty (chapter 3).
29. Poor fluid circulation
1. The water pump does not work (chapter 3).
2. The cooling system is clogged (chapters 1 and 3).
3. The thermostat is stuck (chapter 3).