Hi All,
Have become a bit pissed off with fuel from my twin 45's draining back to tank. Wasn't much of an issue at first but car is driven a lot more and I hate having to wait for electric pump to push up juice again. Have seen alloy one-way check valves on line- do others use them? Also see a few of you guys use fuel regulators, do these have any one- way valves fitted in them to stop fuel returning to the tank? R these of any benefit generally, I use a low pressure pump located near the diff and don't think the fuel pressure is overwhelming the carbies. Any thoughts or suggestions?
Cheers,
Len

the fuel shouldnt really drain back through the fuel pump as far as i know, you might have a torn diaphram

 Mechanical Fuel pump went south so fitted a plate over the mounting and am using just the electric fuel pump. Still used the electric one to prime the carbies when the mechanical one was working.

The float bowl in your carbs should have heaps of fuel in it to get the car running while your pump pushes fuel up as long as the carbs aren't leaking. Pump should only take a few seconds to get the fuel through to the carbs. I'd be checking for leaks and kinks in the line if the fuel is not getting through within a few seconds. If that is ok then start looking at another pump.