Quote: I picked up a summit dualfeed line with filter and gauge and a separate line to tape the gauge to the windshield. I got a constant 4 psi with no drop in pressure,engine still falls at 5 grand. I took theline off and installed it to the feed line and get a chatty 6.5 psi. I also replaced the fuel pump rod with a mancini one.
I would verify the needle and seat are correct. There is a certain size needed to allow enough fuel to enter the bowls. If to small you may be starving for fuel even though you have pressure. Pressure is flow to resistance.
