High pressure common rail fuel injectors are opened by ________. ...

[Medesa]

High pressure common rail fuel injectors are opened by ________.
 
  A) Solenoids B) Injector pump pressure
  C) Engine oil pressure D) Either A or C

Question 2

Technician A says that the paper test could detect a burned valve. Technician B says that a grayish white stain on the engine could be a coolant leak. Who is right?
 
  A) Technician A only B) Technician B only
  C) Both technicians A and B D) Neither technician A nor B

[amandanbreshears]

Answer to Question 1

D

Answer to Question 2

C

[Medesa]

TYSM

[xiaomengxian]

Thanks for the timely response, appreciate it