Causes and elimination of insufficient fuel supply for Yanmar diesel engines
Yanmar diesel engines are a widely used type of engine, but during use, there are sometimes problems with insufficient fuel supply. Insufficient oil supply can lead to a decrease in engine power or even failure to start. This article will analyze the causes of insufficient fuel supply for Yanmar diesel engines and propose corresponding elimination methods.
1. The reason for the insufficient fuel supply of Yanmar diesel engine.
1.The fuel tank switch is not turned on or there is not enough oil in the tank. If the tank switch is not turned on or the tank is not well stocked, the fuel will not be able to enter the fuel system, resulting in insufficient fuel supply.
2.Clogged or leaking oil lines. Clogged or leaking oil lines can cause fuel to not flow properly, which can affect the effectiveness of fuel supply.
3.The diesel filter is clogged. A clogged diesel filter can block the flow of fuel, resulting in a reduced fuel supply.
4.The fuel injection pump is damaged. Damaged fuel injection pump will cause the fuel to not be injected properly, which will affect the fuel supply effect.
5.The governor is improperly adjusted. Improper adjustment of the governor can lead to unstable engine speed, resulting in insufficient fuel supply.
2. Elimination method of insufficient fuel supply for Yanmar diesel engine.
1.Check the tank switch and tank stock. First check that the fuel tank switch is turned on and see if there is enough fuel in the tank. If the tank switch is not turned on or the tank is running low, you should add fuel in time and make sure the tank switch is on.
2.Inspect tubing and seals. Check whether the oil pipe is blocked or there are signs of oil leakage, if there is a blockage, it should be cleaned up in time, and if there is oil leakage, the seal should be replaced in time.
3.Clean the diesel filter. If the diesel filter is clogged, it will affect the flow of fuel. Therefore, the diesel filter should be cleaned regularly and the filter element replaced.
4.Check the fuel injection pump and fuel injector nozzle. If the fuel injection pump is damaged or the fuel injector is clogged, it will affect the fuel injection effect. Therefore, the working condition of the fuel injection pump and fuel injection nozzle should be checked regularly, and if there is damage or blockage, it should be repaired or replaced in time.
5.Adjust the governor. If the governor is not adjusted properly, it will affect the stability of the engine speed, which will affect the fuel supply. Therefore, the governor should be reasonably adjusted according to the working condition of the engine to ensure that the engine speed is stable.
III. Conclusion. 
There are many reasons for insufficient fuel supply to Yanmar diesel engines, such as the fuel tank switch is not open, the oil pipe is blocked, the diesel filter is blocked, etc. For different reasons, corresponding elimination methods need to be taken, such as checking the fuel tank switch and oil storage level, cleaning the diesel filter, etc. The correct elimination method can effectively solve the problem of insufficient oil supply and ensure the normal operation of the engine. At the same time, in order to prevent the problem of insufficient fuel supply, the engine should be regularly inspected and maintained to ensure the normal operation of the fuel system.