Few days back,I ask this question, kinda stated it unclear at first, but meant "will this engine run if 180-pump] 360*-engine] out of time? had mixed response to this, but answer is yes in my case. got back to project yesterday, pinned flywheel & pump, disconnect pump from drive gear, [this is jd that doesn't use keyway] rotate engine 1 rev, repin flywheel. stats/runs great. It was starting with help [fluid] before & sounded like hitting proper, but black smoke.,lazy. this was a brand new reman pump, installed by person unknown. as someone else said, first thought is defect in pump. Now I know!! thanks all YTers for your input----