When lower than specified oil pressure is observed, what could be a potential cause according to Technician A and Technician B?

When lower than specified oil pressure is observed, both worn main or rod bearings and a clogged oil pump pickup screen are potential causes that can lead to this issue.

Worn main or rod bearings increase the clearance between the bearings and the crankshaft, which can result in decreased oil pressure due to a greater volume of oil bypassing the bearings. This condition disrupts the intended flow and pressure of oil in the engine, reducing the overall oil pressure.

On the other hand, a clogged oil pump pickup screen impedes the flow of oil from the oil pan into the oil pump. If this screen becomes obstructed by debris or sludge, it can restrict the amount of oil that can be drawn into the pump, leading to insufficient oil supply and thus a drop in oil pressure.

By recognizing that both technicians have identified valid causes for low oil pressure, the selection of both causes accurately reflects the nature of potential engine issues related to oil pressure problems.