Give it a crank until it slows to a drip...drip...drip. If it takes too much force to slow to a drip replace. I might be able to help you later this week if you have time to do a midweek run.
Check the packing nut and see if it is loose or tight. If loose then tighten with wrenches etc. If it is tight and still leaks then look at changing the packing.