Question

What tools are needed to verify a low oil pressure concern?

1) Oil pressure gauge
2) Oil pressure switch
3) Oil pressure relief valve
4) All of the above

Answer 1

To verify a low oil pressure concern, an oil pressure gauge and an oil pressure switch are the primary diagnostic tools. The oil pressure relief valve is a component that affects oil pressure but is not a diagnostic tool itself. Options 1 and 2 are the correct tools for diagnosis.

Step-by-step explanation:

To verify a low oil pressure concern, the tools needed include:

1. Oil pressure gauge - This is a diagnostic tool used to measure the actual oil pressure in the engine. It can be mechanical or electronic and provides a direct reading of pressure, allowing you to determine if the oil pressure is within the manufacturer's specified range.
2. Oil pressure switch - Also known as an oil pressure sensor, this switch signals if the oil pressure falls below a certain threshold. While it doesn't give a precise measurement, it can alert to the presence of low oil pressure.
3. Oil pressure relief valve - Although not a diagnostic tool, the relief valve is critical in maintaining proper oil pressure. It should be inspected to ensure it is functioning correctly and not contributing to low oil pressure issues.

Out of the given options, both the oil pressure gauge and the oil pressure switch are tools used directly in the diagnostic process of verifying oil pressure. The oil pressure relief valve is a component that may be inspected if there is a suspected issue with maintaining the correct oil pressure, but it is not a tool used for diagnosis in itself. Therefore, options 1 and 2 are the tools needed to verify low oil pressure concerns.