What is the cause of the Exhaust Gas pipe exhaust failure

Release time:

2022-10-12

For the fault of Exhaust Gas pipe exhaust smoke, the cylinder breaking method should be used to judge. Check the Exhaust Gas pipe by cylinder to find out abnormal cylinders and damaged parts.

What is the cause of the Exhaust Gas pipe exhaust failure

For the fault of Exhaust Gas pipe exhaust smoke, the cylinder breaking method should be used to judge. Check the Exhaust Gas pipe by cylinder to find out abnormal cylinders and damaged parts.

1. First start the diesel engine until the speed reaches about 700r/min, and then check the fuel cutoff cylinder by cylinder. When disconnecting the high-pressure fuel pipe of the second cylinder, it was observed that the exhaust smoke from the Exhaust Gas pipe changed from the original gray-white smoke to a large amount of white smoke, which indicated that there was a fault inside the second cylinder.
2. Disassemble the fuel injector of the second cylinder, and then check the fuel injection pressure and the atomization quality of the fuel injection, and find that the fuel injection nozzle couplers are leaking oil. After replacing the coupler, start the diesel engine again after assembly, and observe the smoke exhaust of the Exhaust Gas pipe. It is found that the exhaust smoke has changed from the original gray smoke to a large amount of white smoke, indicating that water has entered the combustion chamber. Remove the sleeve for inspection.
3. After stopping the machine, when disassembling the cylinder head, it is found that the cylinder head nuts of the first and second cylinders are loosened when 4 nuts are twisted. This situation is due to the pressure of the cylinder head gasket, which causes water to enter the combustion chamber and causes the Exhaust Gas pipe to exhaust smoke.
Through the above introduction and analysis of the What is cause of the Exhaust Gas pipe exhaust failure, hope it helps you.