ASE Automobile Master Technician (A1-A8) Questions : Question #1

will usually make a thumping noise most noticeable when the engine is first started

may cause a thumping noise when idling

will usually make a heavy knocking sound. Engine oil pressure may also be low, especially at idle.

will usually not cause a noise unless severely worn

ASE Automobile Master Technician A1-A8 Practice Test