When engine is hot restarts and idles very rough for a couple minutes then fine. on 1996 Ford F-150

The trucks starts right up and runs fine. But when trying restart it, it starts, but runs extremely rough for a couple minutes. Then it evens out and runs fine again. What could be causing the rough restarts?

Asked by for the 1996 Ford F-150
Pressure reg.
Which pressure regulator? Fuel pressure, oil pressure,....?
Fuel pressure reg..... Remove vacuum hose to see if ANY fuel present... IF so, replace regulator...
Ok. Thank you.