Practice question

A school bus diesel cranks slowly and is hard to start on cold mornings only. After warming, it starts normally. The technician should check the:

  1. Intake air heater/grid heater or glow system and cold-start aids along with battery and starting circuit condition
  2. DPF differential pressure sensor
  3. SCR catalyst efficiency
  4. Cabin blower resistor

Answer: A — Intake air heater/grid heater or glow system and cold-start aids along with battery and starting circuit condition

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