Best Mechanical Fuel Pump

My swinger was doing the same thing. I am running a carter HV fuel pump 3/8 fuel line w a holley 750 double pumper. It would run fine for the longest time and then out of the blue hog up and die. It ended up being the needle and seats in my case, but i did not have particles in my gas. That is probably causing you seats to stick open just a little. It dont take much. I replaced both of mine, readjusted the floats and have put on 500+ miles w no more problems. After a couple of time breaking down in traffic I was getting very angry. Id start w new fuel filter and replace hose from filter to carb and then clean carb, if you havnt already. Best of luck, i felt your pain and i didnt like it. Breaking down in traffic sucks, when you are trying to move your car and have assholes yelling @ you like you broke down there on purpose.