工作时间
早9:00 - 晚18:00
周六日休息
DATE：2019/6/24 12:13:27 HITS：854
Failure Analysis:
The failure is usually caused by a blockage or leak in the fuel supply system.
The cause of the malfunction:
1 oil in the air or the oil line interface loose, resulting in leakage.
2 air filter partially blocked, resulting in the lack of diesel into the gas.
The 3-line or into the oil filter is clogged.
4 diesel filter clogging.
5 fuel pump failure.
6 fuel injection pump stuck in the non-oil position.
7 injector fuel injection hole is clogged or the needle valve is stuck in the non-oil position.
Troubleshooting methods:
1 Remove the high pressure fuel pump back to the oil screw press with the right hand fuel pump oil pressure, oil feeling compliance, but the diesel filter out impurities. Remove the filter, check the diesel filter is clogged, found that diesel filter has gone the internal sludge more, diesel filter lost. Replace it with a new filter, less than 5min after starting the diesel engine suddenly shut down.
2 Remove the diesel filter back to the oil screw press the fuel pump, the fuel pump oil normal, good seal.
3 Remove the high pressure fuel pump side cover, unscrew the retaining nut of the four high-pressure tubing, use a flat-blade screwdriver to pry the plunger to observe each cylinder oil, check the plunger and valve were normal. Diesel engine combustion chamber seal bad start should be very difficult, and this diesel engine is easy to start, should not be a valve leakage, valve clearance or fuel supply advance angle issues.
4 Remove the fuel pump, fuel pump wheel and jack, it was discovered the wheel into the ejector comprising a difference of 90 °, the position of the two locking tabs wheel is stuck, unable to rebound, leading to the start of the diesel engine fuel pump does not work.
5 Adjust the relative position of the two locking tabs, install the fuel pump and return pipe fixing nut screw, high pressure did not mind the high pressure fuel pump. Start the diesel engine, observe the half-hour downtime failure incurs exclude.
