**Causes:**  

A) Use of incorrect type of lubricating oil  

B) Fault in the cold start system  

C) Engine temperature too low  

D) Excessive engine lubricating oil  

E) Wear of turbocharger seals and bearings  

F) Use of incorrect type or grade of fuel  

G) Engine has reached the overhaul limit  

H) Cylinder head water leakage  

**Remedial Measures**  

A) Replace the lubricating oil and filter/ensure the correct type of lubricating oil is used  

B) Install a cold start device, inspect, repair, or replace if necessary  

C) Refer to "Coolant Temperature Lower Than Normal"  

D) Check the lubricating oil level  

E) Repair/replace the turbocharger  

F) Start the engine with a temporary fuel tank for diagnosis  

G) Overhaul the engine  

H) Inspect the cylinder head and gasket, replace if necessary  

**Foshan Generators, Yuchai Generators, Kaipu Generators ---- Guangdong Longhong Electromechanical Equipment Co., Ltd.**