ASE H2 Diesel Engines (Transit Bus) Practice Questions - ASE H2 - Diesel Engines (Transit Bus) Certification Exam

A transit bus diesel produces continuous black smoke under acceleration. Which of these is the most likely cause?

Coolant entering the combustion chamber Insufficient air for the amount of fuel injected Engine oil being burned in the cylinders Excessively retarded injection timing only

Correct Answer:

Insufficient air for the amount of fuel injected

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