Some of the common problems found in Auxiliary diesel generator engines can be due to,

(i) Power Imbalance, (4)

(ii) Degradation of Lubricating Oil, (4)

(iii) Exhaust gas high temperature (4)

(iv) Unusual Knocking Sound. (4)

State how to identify these problems during engine operations, and the action steps that you shall take as a watchkeeper.