What would happen if feul regulater went bad on a 88 Ford 150 with a 5.0?

What would happen if feul regulater went bad on a 88 Ford 150 with a 5.0?

A faulty regulator usually causes hard starting, no start, or the fuel pump may run continuously when you first turn the key on instead of priming the fuel rail for a couple of seconds then shutting off til the vehicle starts, like it is designed to do.These conditions are present if the regulator is stuck open.A regulator that's stuck closed usually causes high fuel pressure and a rich running engine.Remove the vacuum line from the regulator, look inside the hose for the presence of fuel and check for the same thing at regulator vacuum port. If gas is present in either part, the regulator is defective. You should attach a fuel pressure gauge to the shrader valve on the fuel rail, turn the key on/engine off and take a reading. Now start the truck and take another reading. With the koeo, fuel pressure should be between 35-45psi.Fuel pressure should lower to between 30-40psi with truck running. If pressure is incorrect, do this test.Use vice grips (with a rag for hose protection)and clamp the fuel return hose closed. Have a assistant start the vehicle while you watch the gauge. The truck will only run for a few seconds like this.Pressure should double what it was during the koer test(60-80psi)If it doesn't, the fuel pump is likely defective instead of the regulator.

Go bad in what manner? They can hang open causing low fuel pressure. They can hang shut causing high fuel pressure. They can leak externally causing a fire hazard. Probably a few more I forgot…