Practice question

A school bus diesel has a restricted air intake (plugged air filter). The MOST likely symptoms are:

  1. Low power, black smoke under load, and possibly elevated exhaust temperature
  2. Increased power and clean exhaust
  3. Higher oil pressure only
  4. No symptoms at all

Answer: A — Low power, black smoke under load, and possibly elevated exhaust temperature

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Practice more: ASE S2 Diesel Engines (School Bus) Practice Questions - ASE S2 - Diesel Engines (School Bus) Certification Exam →