Kobelco excavator. The engine emits white smoke and sometimes stops automatically. what to do?

There are many reasons, let me talk about a few of the most common ones first.

White smoke and flameout can be caused by water in the fuel tank .

White smoke and incorrect engine noise or the power is low, the fuel supply time is late. That is, if the ignition time is late, the pusher may be broken, and sometimes flameout may occur.

White smoke may be emitted, or the oil head may be stuck