We put the engine in the boat last night after rebuilding and got ready to crank it. NO fuel. The fuel pump is not pumping. Lines are not clogged and new water seperator on it. I can blow fuel through the seperator and fuel comes out at the "in" line on the pump(when taken off). The pump has a row of bolts around it. Is this rebuildable? Where do I get a kit? Can I take it off and put a 12 volt pump on it?