I have a 1970 ford 4000 diesel. It wouldnt crank so i changed fuel filters and notices the wrong filter was attached, after getting the right one still not cranking, fuel is getting to the pump and loosing the small 5/16 bolt on the side of the pump and fuel was squirting out there when running on ether, but not coming out the injector lines. Just wondering if i should go ahead and pull the pump or is there anything else i can try.