Red Seal Truck and Transport Mechanic Practice Exam

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What is one common symptom of a clogged fuel filter?

  1. Engine overheating

  2. Engine hesitation during acceleration

  3. Increased fuel efficiency

  4. Decreased air intake

The correct answer is: Engine hesitation during acceleration

A common symptom of a clogged fuel filter is engine hesitation during acceleration. This occurs because a fuel filter that is not functioning properly restricts the flow of fuel to the engine. When the engine demands more fuel during acceleration, the clogged filter does not allow an adequate supply, leading to a momentary loss of power or hesitation as the engine struggles to receive the necessary fuel flow. In contrast, symptoms like engine overheating are usually linked to cooling system issues rather than fuel supply. Increased fuel efficiency is more likely when a fuel filter is clean, as it ensures optimal fuel flow and combustion. Decreased air intake pertains to issues within the air intake system and is unrelated to fuel filter concerns. Understanding the impact of a clogged fuel filter on engine performance is crucial for proper vehicle maintenance and troubleshooting.

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