Technician A says that carbon inside the engine can cause ...

[Deast7027]

Technician A says that carbon inside the engine can cause excessive NOx to form. Technician B says that excessive NOx could be caused by a cooling system fault causing the engine to operate too hot. Which technician is correct?
 
  A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Question 2

After the following exhaust emissions were measured, how was the engine operating?
 
  HC=766 PPM CO2=8.2 CO=4.6 O2=0.1
 
  A) Too lean B) Too rich

[vish98]

Answer to Question 1

C

Answer to Question 2

B

[Deast7027]

Thank you!

[vish98]

Happy to help