A car has come into a shop with an engine misfire. A power balance test has been performed with the following results.
Technician A says that cylinder 1 may have low compression. Technician B says that cylinders 2-3-4 are not working properly. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

A car has come into a shop with an engine misfire. A power balance test has been performed with the following results. 
Technician A says that cylinder 1 may have low compression. Technician B says that cylinders 2-3-4 are not working properly. Who is correct?
A) A only 
B) B only 
C) Both A and B 
D) Neither A nor B

Quizplus · Accepted Answer

A power balance test shows the percentage of power each cylinder is contributing to the engine. In this case, cylinder 1 is contributing significantly less power than the other cylinders, indicating that it may have low compression. Technician A is correct. There is no evidence in the given information to support Technician B's claim that cylinders 2-3-4 are not working properly. Therefore, Technician B is incorrect.

A Car Has Come into a Shop with an Engine