How can you tell if your high pressure oil pump is bad on your 1999 7.3?

To determine if the high pressure oil pump on your 1999 7.3L Powerstroke is bad, look for symptoms such as hard starting, lack of power, or excessive cranking before the engine starts. Additionally, check for low oil pressure readings on the gauge and listen for unusual noises from the pump area. A common diagnostic test involves checking the high-pressure oil system's oil pressure using a gauge; if it’s significantly below manufacturer specifications, the pump may be faulty. Finally, inspect for oil leaks around the pump, which can also indicate failure.