Clean all the gunk you can get out of the opil pan with a scraper, then take it to the local coin car car wash and hose it down with the engine degreaser and a couple of times with hot, soapy water. Reinstall it on the engine,(don't bother with gaskets, just do a loose bolt-up) pour in a gallon of Diesel fuel, and spin the pump clockwise. The lightweight fuel should pump ok, and its solvent properties will clean out the oil passages without doing a full teardown.
Jerry
Last edited by Hotrod Lincoln; 10/03/2008 5:54 PM.