Analysis of the cause of the failure of the excavator engine:
1. The battery is losing power.
2. The battery cable is not firmly connected.
3. There are certain fault codes or event fault codes that make the diesel engine unable to start.
4. There is no power supply for ECM.
5. The engine oil level is too low.
6. The starting circuit or the solenoid coil of the starter is faulty.
7. The starter is damaged.
8. Excessive wear of flywheel ring gear.
9. The intake heater of the starting auxiliary device is faulty.
10. The diesel engine stop switch is in the ON position.
11. The speed/timing sensor is faulty and incorrectly installed and needs to be calibrated.
12. The fuel injection drive pressure is abnormal.
13. The fuel injector does not work.
14. The fuel supply system is faulty.
15. Burning failure.
16. The internal parts of the diesel engine are bent or stuck.
Several reasons why the excavator cannot be started with electricity:
The internal contacts of the battery relay are ablated.
Poor contact.
You can check the starter wiring harness and move the wiring harness. The most likely possibility is that the battery relay is broken.
Whether the start-stop relay is good.
