I was having an injector pump leak issue and it lost prime twice. I thought it would be a good idea to install a low pressure pump to prime the inj pump,it ran ok for about 3 minutes,it quit,started leaking worse at the head, I followed the exploded view of the pump and resealed it but cannot get it to fire. What did I break? I also couldnt find weather I installed the cam plate properly,the exploded view showed ihe pin at 9.00 oclock but didnt tell me the position of the frt shaft, Help