Practice question

A school bus diesel with cold-weather operation experiences fuel filter waxing/gelling. The BEST corrective and preventive measures include:

  1. Adding water to the fuel tank
  2. Using winter-blend/treated fuel, a fuel heater, and proper cold-weather fuel handling per the manufacturer
  3. Removing the fuel filter entirely
  4. Idling with no air filter installed

Answer: B — Using winter-blend/treated fuel, a fuel heater, and proper cold-weather fuel handling per the manufacturer

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