What is the reason why the excavator suddenly stalls or the accelerator cannot be applied?

If the excavator suddenly stalls when you are doing intense excavation work, it may cause you a lot of trouble. Especially in some time-critical jobs, this situation will cause delays in the progress of the project, and even require more time and money to repair the excavator.

            When dealing with flameout and throttle failure, we need to figure out the cause of the failure. Here are some possible reasons why the excavator stalls or the throttle cannot be applied:

1. 1. The fuel oil line is blocked:

Blockage of the fuel line means that there are some substances in the engine's fuel system that hinder the flow of fuel, causing the fuel to not flow normally into the combustion chamber of the engine.

If the fuel oil line is blocked, the fuel cannot flow smoothly into the combustion chamber of the engine, resulting in insufficient fuel supply and the engine will stall due to lack of fuel. Moreover, blocked fuel lines may also cause other failures, such as fuel pipe rupture, fuel injector failure, etc., thus affecting the normal operation of the engine.

2. 2. The air filter is clogged:

Excavator air filters are usually used to filter dust and impurities in the air. If the air filter is severely clogged, the air intake volume will be reduced, the engine power will be reduced, and the engine will not be able to get enough air, which may cause the excavator to stall.

If the air filter element is found to be clogged, the air filter element should be cleaned or replaced in time to ensure that the engine can operate normally.

3. 3. The fuel injection nozzle and fuel injection pump are stuck:

When the engine injector or fuel injection pump is stuck, the injector cannot work properly and fuel cannot enter the cylinder smoothly. This will cause the engine to be unable to operate normally, causing problems such as power reduction and engine overheating. In severe cases, it may even cause the engine to stall.

Therefore, if the engine fuel injector or fuel injection pump is stuck, the excavator should be stopped immediately and inspected. If the fuel injector or fuel injection pump needs to be replaced, the same parts as original should be used to ensure that the engine can operate properly.

4. 4. The pump regulator is stuck at the maximum displacement position:

If the excavator pump regulator is stuck at the maximum displacement position, it may cause engine failure and possibly cause the excavator to stall. When the excavator is operating normally, the pump regulator controls the working speed and intensity of the excavator by adjusting the output power of the oil pump. If the pump regulator is stuck at the maximum displacement position, it means that the oil pump output power is limited to the maximum value, which will result in insufficient engine output power and affect the normal operation of the excavator.

3. 5. Electronically controlled throttle failure:

The electronically controlled throttle of the excavator can control the power output of the engine, thereby controlling the working speed and intensity of the excavator. When the excavator's electronically controlled throttle fails, it will affect the engine's power output. In this case, the excavator's throttle may not be increased, which will cause the excavator's working efficiency to decrease, and even malfunctions and accidents may occur. When repairing and replacing the electronically controlled throttle, you should choose professional maintenance personnel and genuine accessories to ensure that the excavator can work normally.

To sum up, when the excavator suddenly stalls and the accelerator cannot be applied, we need to check the fuel circuit, circuit and other aspects of the problem. If we can discover and solve these problems in time, we can resume the normal operation of the excavator as soon as possible and ensure the progress of the project.