1. Difficulty in starting
It may be because the battery power is low or the battery is damaged, or check whether the battery wires are in good contact. If there is looseness or oxidation, clean or replace it. Finally, check whether the fuel injector is clogged. If there is a problem, clean or replace the fuel injector in time.
2. The engine emits black smoke
It may be due to fuel impurities or excessive injection volume. The fuel needs to be replaced, the fuel injector adjusted, or the fuel reservoir replaced. Check whether the air filter is clogged and replace it promptly if there is a problem. Finally, check whether the engine control system is normal. If a malfunction occurs, repair or replace the system promptly.
3. Oil pollution
It may be that the filter needs to be replaced or is faulty. Replace and check in time. Then check whether the oil cooler is normal. If there is a fault, repair or replace it in time.
4. The engine noise is too loud
It may be that the cylinder liner is worn, or the oil pressure is insufficient. Check whether the cylinder liner and engine oil pressure are normal. If insufficient, repair or replace the cylinder liner and oil pump.
5. Engine vibration
First check whether the ignition system is normal, then check whether the valve clearance is correct and adjust it as required. Finally, check whether the crankshaft lining is severely worn. If it is partially worn, it can be repaired. If it is completely worn, it needs to be replaced.
The above are the common faults and solutions of excavator engines. You also need to pay attention to regular maintenance and repair, and replace wearing parts in time to prevent the occurrence of faults. Hope it helps.
