Question

technician a says that to diagnose abnormal exhaust color, it is important to understand what each color represents. technician b says that the color of exhaust cannot help diagnose abnormal exhaust. who is correct? a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

Explanation:

Exhaust color is a key indicator in diagnosing engine problems. Different colors (e.g., black - rich fuel mixture, blue - oil consumption) have specific meanings. Technician A is correct as understanding exhaust color is crucial for diagnosis. Technician B is wrong as exhaust color does help in diagnosis.

Answer:

a. Technician A