A gasoline direct-injection engine has a light ticking sound when ...

[Shelles]

A gasoline direct-injection engine has a light ticking sound when running. What should the technician do to correct this noise?
 
  A) Change the oil B) Check for vacuum leaks
  C) Check for carbon deposits on top of the pistons D) Nothing, the noise is normal

Question 2

A balance shaft used in a 90-degree V-6 engine is used to correct which of these types of force?
 
  A) Primary vibration B) Rolling couple
  C) Rocking couple D) Secondary vibration

[Bigfoot1984]

Answer to Question 1

D

Answer to Question 2

C

[Shelles]

Gracias!

[jackie]

Thanks for the timely response, appreciate it