DODGE OIL LOW PRESSURE

I Just Pressure Washed The Engine (318) In My '92 Dakota And When I Started It There Wasn't Much Oil Pressure, Barely Over The Low Mark....

Doesnt Do It All The Time. Oil Pressure Drops Then It Dies. What Should I Check?

When I Say Hot, I Mean Too Hot To Touch. I Might Be Able To Get A Picture Of These Indentations Tomorrow If Needed. Along The Fender And...