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What to do if fuel mix with engine oil in diesel generator set?


The fuel oil and engine oil of diesel generator set have completely different functions. They can not be mixed. Once the fuel oil and engine oil are mixed, it means that the sealing of the unit is faulty, which happens sometimes in use.

Today Starlight Power tell you how to deal with it.

When fuel is mixed with engine oil in diesel generator set, it can be eliminated by the following methods:

1. The oil transfer pump membrane is rotted or degummed, which makes the diesel oil flow into the oil pan and mix with the oil. Remove the oil transfer pump, and apply corresponding pressure to the oil inlet pipe and oil outlet pipe on the oil pump test bench. If no diesel leakage is found, the oil transfer pump is intact.

2.The fuel injector has low injection opening pressure and poor atomization, which makes the diesel flow into the oil pan along the cylinder wall and mix with the oil. Remove the injector and test it on the high-pressure oil pump test bench. If the opening pressure of the injector meets the requirements and the atomization is good, it means that the injector is intact. Otherwise, repair or replace it.

3.The front end of the fuel injection pump leaks oil, that is, the oil seal at the front end of the fuel injection pump fails. Remove the inspection hole cover of the gear cover. If a large amount of diesel oil is ejected from behind the driving gear of the fuel injection pump, it can be concluded that the diesel oil is leaked into the oil pan by the fuel injection pump and mixed with the oil. Remove the fuel injection pump and test it on the high-pressure oil pump test bench. It is found that the oil seal at the front end gear Journal of many fuel injection pumps is deformed and a large amount of diesel oil is leaked. When the oil seal seat has the gear to be disassembled, use the trace (indentation) on the top of the special tool screw to deform the oil seal seat and the oil seal, causing diesel oil leakage. Finally, replace the fuel injection pump, and the fault can be solved.

It is difficult to find the mixture of fuel oil and engine oil of diesel generator set in the early stage, so you must not be careless when observing the operation and daily maintenance of the unit, do not wait situation of unit is serious, which will increase the difficulty of repair.

We hope above information can help you when you meet some related problem of diesel generator set. We are not only share technical support, but also supply a complete diesel generator set, we have our own factory in China, founded in 1974. If you are looking for your generator set for power generation, welcome to contact us by our sales person email sherly@dieselgeneratortech.com, we will guide you to select a suitable product.

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