Practice question

A school bus diesel starter draws excessive current and cranks slowly, with batteries and cables verified good. The MOST likely cause is:

  1. Internal starter wear/binding or engine mechanical drag (e.g., seized accessory or internal binding)
  2. A normal condition for diesels
  3. A loose dome light
  4. A worn cabin filter

Answer: A — Internal starter wear/binding or engine mechanical drag (e.g., seized accessory or internal binding)

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