Technician A says that many four cylinder engines do not use a damper. Technician B says that a loose or damaged damper can break the crankshaft. Who is right?

Question

Quizplus · Accepted Answer

Many four-cylinder engines indeed do not use a harmonic balancer (damper) because their primary balance is inherently better than that of larger engines. However, a loose or damaged damper can cause vibrations that may lead to crankshaft failure, making both Technician A and B correct.

Technician a Says That Many Four Cylinder Engines Do Not