Chevrolet Repair: 1991 chevy silverado, fuel pressure regulator, chevy silverado

Question
I have a 91 chevy silverado v6 4.3 liter standerd 5 speed. I dont have any clue as to what is going on with it. my oil pressure keeps going down and when that happens the idle goes down it might be because of the miles but im not  for sure but it has never done this b4 and just started...

Answer
Hello James,
Is it possible the oil pressure is dropping BECAUSE the idle drops?
Check the oil, and see if it seems real thin. I am thinking diluted with gasoline.
Causes could be dirty injector, leaking gasket or seal in the throttle body, or fuel pressure regulator diaphragm ruptured, allowing vacuum to suck raw gas into the intake.

Van