Excavator engine flameout reasons and solutions

The reason why the excavator turns off by itself:

1. The blockage of the working parts causes the excavator to turn off by itself.

Appearing state: The engine speed gradually decreased before the flame was turned off, and black smoke was emitted from the exhaust pipe.

Solution strategy:

Check whether the parts of the excavator are blocked. If there is any blockage, the engine can generally be restarted after clearing the blockage. Due to poor lubrication of the engine, there is an accident of holding the shaft and burning the tile, and this phenomenon will also occur. In this case, the engine needs to be overhauled. (The occurrence of this phenomenon shows the importance of choosing original accessories, and Guizhibang Excavator Parts Network strives to give you good service and quality)

2. The poor fuel supply of the engine causes the excavator to turn off by itself.

Appearing state: Before the machine is turned off, the engine speed is unstable or slowly drops, but there is no obvious black smoke from the exhaust pipe.

Solution strategy:

Check whether the fuel in the fuel tank is exhausted;

Whether the oil supply of the oil pump is normal;

Whether the oil inlet of the sedimentation cup is blocked by debris;

Whether the diesel filter is too dirty, if the diesel filter is too dirty, the diesel filter should be removed, cleaned and reinstalled, and the air in the oil circuit should be eliminated.

 

3. The engine oil supply is suddenly interrupted or the load suddenly increases, causing the excavator to turn off by itself.

Appearing state: There is no process of speed reduction before the excavator is turned off, and it is suddenly turned off.

Solution strategy:

Check engine parts for sudden loosening or falling off;

For the engine with the oil supply rod of the high pressure oil pump controlled by the flameout solenoid valve;

Check if the flameout solenoid valve is powered off;

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