Question

when performing a power balance test, each cylinder needs to be disabled individually to observe rpm drop. on most newer vehicles, which is the best method to use to do this?
select one:
o a. use a scan tool
o b. disable the injectors
o c. disable the spark
o d. use a compression tester

Explanation:

On newer vehicles, scan tools are integrated with the vehicle's computer system. They can precisely control and disable each cylinder's fuel injection or ignition (depending on engine type) for a power - balance test. Disabling injectors or spark manually (options b and c) can be error - prone and may not be as accurately controlled as with a scan tool. A compression tester (option d) is for measuring cylinder compression, not for cylinder - by - cylinder power - balance testing.

Answer:

a. Use a scan tool