ASE T2 Diesel Engines (Medium Heavy Truck) Practice Questions - ASE T2 - Diesel Engines (Medium Heavy Truck) Certification Exam

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Technician A says blue exhaust smoke usually indicates oil consumption. Technician B says black exhaust smoke usually indicates incomplete combustion or excess fuel. Who is correct?

Technician A only Both A and B Technician B only Neither A nor B

Correct Answer:

Both A and B

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