Technician A says that oil should be squirted into all of the cylinders before taking a compression test.
Technician B says that if the compression greatly increases when some oil is squirted into the cylinders, it
indicates defective or worn piston rings. Which technician is correct? - correct answer ✔✔B only
During a cylinder leakage (leak-down) test, air is noticed coming out of the oil fill opening. Technician A
says that the oil filter may be clogged. Technician B says that the piston rings may be worn or defective.
Which technician is correct? - correct answer ✔✔B only
Why should the customer concern be verified by the service technician? - correct answer ✔✔Both b and
c:
To verify that the repair can be verified under the same conditions as when the concern was verified
To make sure that a true problem exists
What precautions are needed to be performed to help prevent air from getting trapped in the cooling
system when replacing coolant? - correct answer ✔✔Open bleeder valve(s) during filling
An engine may need to have an air induction/ throttle body service performed if the engine is
performing how? - correct answer ✔✔Rough unstable idle/stalling
Rust stains are seen around a universal joint. This usually ______________. - correct answer ✔✔The
joint has rusted and will normally require replacement
Powertrain mounts are made with ______________. - correct answer ✔✔Either a or b:
Rubber
Fluid Filled
Why does drive shaft position need to be marked when they are removed? - correct answer ✔✔To
ensure proper phasing