Ford Repair: Gas flooding, fuel pressure regulators, fuel pump relay

Question
I have a 94 f-150 w/351w and 142,000..truck ran like a dream till yesterday..flooded on its own..discovered it when I took the air intake off the throttle body after it would not start..it did smoke blue and smell of gas real bad..noticed also seems to be leaking gas once under pressure some where near the the back of motor or the last cylinder on pass. side of truck..with the pump fuse pulled the truck will run well fine till gas is gone...then quits...it will also fill the the vacuum lines with gas as well that run to the what I call Dinty Moore Stew can in front of the battery..just seems to push fuel like there is no tomorrow....the looks like new inside and out and has never ever hinted at anything ever being wrong..Major tune done a year ago and has about 10,000 miles max on it since then..

Answer
We need to find out what the fuel pressure is. Fuel pressure regulators don't go bad often, but we may be looking at one. Or the fuel pump relay could be sticking open. The regulator would explain gas in the vacuum lines. If the fuel rail must come off, replace the injector o-rings accordingly.