ok im taking the pump back off tomorrow but i think i know what my problem is already.. the spring (#200) in this pic, does that go in the center of part #27 the cross shaped connector? if so, my pump doesnt have it. i dont recall having removed it, its not in any of my pictures i took of the dissassembly and its not in my clean diesel tray which i set parts in as i removed them from the pump. i guess its possible it jumped out when i took the plunger out, not sure.