**Causes:**  

A) Air in the fuel system  

B) Leakage or blockage in the fuel system  

C) Engine-driven equipment engaged with the engine  

D) Fuel filter clogged or fuel frozen due to excessively low temperature  

E) Suction fuel line blocked  

F) Use of incorrect type or grade of fuel  

G) Water in the fuel  

H) Insufficient preheating  

I) Intake system blocked  

J) Damaged pressure pipe  

**Remedial Measures:**  

A) Bleed air from the fuel system and tighten fuel pipe connections and filter fittings  

B) Inspect the fuel tank upright pipe  

C) Disengage the engine-driven equipment  

D) Replace the fuel filter and install a fuel heater  

E) Clean the fuel lines  

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

G) Replace the fuel and install a fuel-water separator  

H) Refer to the user manual/check the fuse, reset by pressing the button if needed, inspect wiring/interlock buttons and preheating relays. If preheating elements require replacement, contact authorized personnel  

I) Clean the intake air lines  

J) Install a new pressure pipe  

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