Carter P4070 fuel pump pressure reading.

This video captures the sound and pressure (about 4.5 psi) of a Carter P4070 fuel pump on a ‘77 Ford Bronco. The pump is being powered on while the engine remains off, with the fuel pressure gauge connected in place of the carburetor. The pump is quite loud, despite the mounting with rubber bushings.

[@bry94608]

Mine sounds the same. I feel like I’m hurting it if the engine isn’t running

[@rynb15]

is this with or without a fuel pressure regulator?

[@BubaJ1000]

And