I have bought a good running 464 IH tractor it's diesel. The injector pump was leaking out of where the throttle comes out of the top and the kill switch . So I unbolted the little nuts that hold it on there and put a o ring under there and then put the nut back on tight . Now I can't get it started did I mess something up by doing that. I have done it before and fixed leaks and never had any trouble. I cracked the injector lines and I am getting diesel out there. No smoke out of the exhaust. It will try to run when I give it small amounts of starting fluid but not very good . I think I might have messed something up in my injector pump what do y'all think.