I think my problem was a little different. I always assumed it was some type of blockage caused by trash stuck in the filter. It would stop dead, then crank back up, very mysteriously. I put a new filter in there and it stopped doing it.

His issue is a bit different in that it has to sit for a bit for the cranking to work. Does sound electrical. Sorry for the confusion, I didn't read the post closely enough.

-- John