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Identify Generator Malfunction Through The Smoke Analysis

Find out how to identify generator malfunction through smoke analysis.

The exhaust gas exit of a Diesel Genset can indicate that something is wrong because it shouldn't have any colour in normal usage condition.

There are three types of smoke that is been released from Genset.

1) Black smoke.

2) Blue smoke.

3) White smoke.

Black smoke

The black smoke is the most common smoke that is released from the genset engines and is nothing more than not burned carbon particles, which is a sign of a less efficient combustion, as a result of engine overload or an unbalance relation between air and fuel. The fuel system is providing excessive fuel or there isn’t clean air (oxygen) enough for the combustion.

Blue smoke

In a cold start-up of the genset, it can generate some release of one or two puffed smoke in a blue tone, but more than that can indicate that there is a severe problem. The blue smoke indicates the presence of oil in the combustion, which means that the engine probably has an oil leaking that passed to the combustion chamber.

White smoke

White smoke indicates that there is water or vapor escaping through the exhaust or fuel that wasn’t burned, which indicates that it is possible that the problem is in the injection system.

When you suspect that the diesel fuel is of low quality, install separators filters in genset, fuel tanks cisterns and fuel transfer systems.

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Diesel Genset Genset


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