rustystud
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Wet stacking occurs because an engine which has a constant RPM (like a generator) runs at less then about 50% load for an extended time period. Since the engine injection system puts out the same amount of fuel into the cylinder at the given RPM if it is not run near capacity you will have excessive fuel to deal with. Since a good percentage of the fuel will not get burned it instead goes down the cylinder walls washing away all the oil. This is a simplistic explanation but pretty much explains what is going on.
This is also one of the reasons generator manufacturers went to an inverter style generation system. The engine can vary it's RPM as load demands.
This is also one of the reasons generator manufacturers went to an inverter style generation system. The engine can vary it's RPM as load demands.