Question 146Motor Plants - 1st Asst/Chief
70% to passSurface irregularities, such as erosion and pitting on injection pump plungers, will _______________.
Aaffect fuel oil metering
Baffect engine performance at low-speed only
Cdisappear due to fuel oil abrasion
Dincrease ignition delay
AI Explanation
The correct answer is A) affect fuel oil metering. Surface irregularities, such as erosion and pitting on injection pump plungers, can alter the precise metering of fuel oil into the engine's cylinders. This change in fuel delivery can negatively impact the engine's performance across all speed ranges, not just at low speeds as suggested in option B. Options C and D are incorrect because the surface irregularities do not simply disappear due to fuel oil abrasion, nor do they increase ignition delay.
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