Guess that is Major Tom. I mistook your "rank" by seniority for user name. In any case, I did as advised and the new pump did the trick. Thing started right up and purred like a kitten. A wee bit of tappet noise, but it has been sitting for some time... It never occurred to me that the pump tested on the bench wouldn't work on the block. Thanks for the help. Now I'll get to work checking the lines back to the tank and the tank itself, before running to the gas station...