Malfunction | Possible causes | Remedy |
| Temporary noise when starting from cold. | Normal | The noise disappears after warming up the engine oil and achieve a normal pressure |
| Continuous noise after the engine has not been run for 48 hours. | Oil leaked from the chambers of hydraulic jacks of backlashes of valves, and they hit the air | The noise will disappear after 15 minutes of engine operation when the crankshaft reaches a speed of 2000-3000 min -1
A warning  Do not increase the engine speed of the engine above 3000 min -1, as this may damage the hydraulic jacks of backlashes of valves.
|
| Continuous noise after starting the engine and replace the cylinder head | Insufficient oil in the engine oil ducts |
| Continuous noise after a long start motor starter or towed | Oil leaked from the chambers of hydraulic jacks of backlashes of valves, and they hit the air |
| Continuous noise after replacing the hydraulic jacks of backlashes of valves |
| Continuous noise at the frequency of idling after driving at high speed | The engine oil level is too low or too high | Check the engine oil level |
| A large amount of air dissolved in the oil after high speed | Check the oil supply |
| Deterioration of motor oil | Check the oil and, if necessary, replace it |
| The noise lasts longer than 15 minutes | The low pressure in the lubrication system | Check the pressure in the lubrication system |
| Defective hydraulic jacks of backlashes of valves | Remove the cylinder head and pressing the hydraulic jacks of backlashes of valves, check the value of compression |
