Please help if possible... updating my 240z Datsun to electrical pump.. I wired everything in place utilizing existing harness from rear to the wires in front by radio.. Holley fuel regulator 1-4 psi. Im using a oil pressure switch Airtek 0S75 il to activate pump via a relay. All of which is feeding triple webers.my webers have new floats and needle and have been measured for float levels.
Cars starts with no problem. I hear a constant light knocking sound of the pump being activated.
My problem is my webers are flooding of fuel. I gone through everything and im at a lost. Attach is my diagram for your reference and any assistance is much appreciated.
All products utilized are brand new.
Could it be that I wired it incorrectly and fuel pump is power constantly. The plastic float are measured from gasket to middle. 12.5mm to the float needle.
I do not have fuel return line. Im feeding carbs
One after another. Also, being i see plenty of fuel i don't understand why fuel gauge never moves. Shows zero pressure. Maybe its faulty and shouldn't affect fuel flow.
Help is appreciated 🙏