As below, most likley the oil pump moved while you were taking the old one out or while you were putting the new one in. Ken Ames Quoting Jonathan Jusczyk <jusczj@xxxxxxx>: > When putting in a distributor, two things have to line up. First, the > worm gears must mesh together, and secondly the oil pump drive (the wide > flat section at the bottom) must line up. So, assuming nothing moves, > the distributor can go in at 0 deg or 180 deg, as this will make the oil > pump drive line up. Once stuff starts moving around, it gets a bit > harder since you'll have to rotate the distributor around a bit to get > it to drop all the way back in. My guess is that one of the gears got > rotated around a little bit and the next time you got both parts to mesh > properly they were 45 deg off from where you started. Nothing to worry > about, once you get it started and straightened out with a timing light. > > Jonathan Jusczyk > > 1973 AMC Javelin > > > ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/