Cadillac Repair: 1993 cadillac seville 4.6 northstar fuel pressure regulator, fuel pressure regulator, head gasket replacement

Question
well simply put is there supposed to be a vaccum line on the fuel pressure regulator on this particular model because i dont know where it comes from to go to the regulator i tore the motor down for a head gasket replacement then it sat for 9 months and now back together i can't find the vaccum line for the regulator and i don't remember taking one off so any help and picture would be great thanks

Answer
Yes, There IS a vacuum line that goes from the throttle body to the pressure regulator. The vacuum line comes from the backside lower port of the throttle body to the fuel pressure regulator. If you want pictures you need to contact onlineautohelp@msn.com.