Exam Question

### Introduction
Engine speed fluctuation, often termed 'hunting', is a condition where the engine RPM oscillates around the set point without any change in the telegraph order. This is an undesirable condition indicating a fault in the engine, its control systems, or a significant variation in external load. A systematic observation of various engine parameters is crucial for accurate troubleshooting. The following statements detail the observations that could indicate specific faults causing speed fluctuation.
### 1. Fuel System Irregularities
This is one of the most common causes of speed fluctuation, as any disruption in the quantity or quality of fuel delivered to the cylinders will result in a change in power output, causing the governor to react.