The thing i find easiest to do is after i filled the fuel filter and bowl when it is in. To get the fuel to the filter, i bought a cheap tire air filler with detatchable hose and a screwed it off so i can use it on the screader walve and a boat primer bulb with hoses, and attach this to the schreader walve and pump this into a bottle until theres only diesel coming out, then i bleed nr 1,3, 5, 7injector try to start it and then loosen the nr 2, 4, 6, 8 injector until it idles like a clock in addition i added some small o-rings between the fastening bolt to the injector and the plastic return caps so they won't move loose, and to prevent leaking..