Holley/Demon Carb stumble

That's the other thing, this test was done with only one line (the primary bowl line) removed. the secondary was still hooked up to the carb. If i go to 11 psi i will have to remove the sconday fuel feed line and add it to my test(would need a Y fitting) or plug it off

PRH said

You’re not understanding what I’m saying.
Let’s say you turn up the regulator to 15psi, and retest with the valve to set to maintain 9psi, and it still takes 115 seconds to pump a gallon.

Then, in operation ....... you set the pressure to 9psi....... and the pressure drops as soon as the motor starts making over about 375hp...... and the floats drop.

Click to expand...

I disagree!!!
The regulator is Pinching off the Flow as it is getting up to the regulated PSI so more of the fuel that the pump is pushing is being return to the fuel tank. AT 9 PSI there is (0) flow out of the hose and there can't be or the pressure would continue to creep up above 9 psi.
But I'm willing to retest. 12 Psi at the req, dropping it to 9 psi with the ball valve and a container.
Stay tune:D