Sounds like a bad electric pump. I've got nothing against an inline electric pump between the main mechanical pump and the tank. I do this too when I don't have a gravity assist to the main fuel pump. If you pull the line from the mechanical pump and connect the inline pump to the battery you should start squirting fuel. If it doesn't than you've got a bad inline pump or it's not wired the right way. Only thing I'd caution is that there are some inline pumps that don't let fuel pass when they're off. So make sure you have one that'll allow fuel to bypass, you really don't need those inline pumps when the mechanical one is primed.
