Fuel pressure problem
:? Ok to start this, fuel pressure is running at 15 psi on pressure gauge, would not adjust down, replaced regulator with holley regulator, ran couple times, guess what 15 psi again, ordered a billet regulator from Ron Owens installed guess what ? you guessed it 15 psi again, i have adjustment screw all the way down flush with top of regulator to get 7 1/2 pounds. Any answer's to what may be going on? plugged filter? bad pump?