Google "priming diesel engine" and this comes up...
Step1Get a good mechanic's repair manual. This will give you all the specific details for your diesel engine. These manuals also generally give you a list of tools you need to work on your diesel engine as well.
Step2Look the fuel system over and check for any obvious air leaks. Fill with clean fuel to do this.
Step3Fill your fuel filters with clean diesel and replace them. Do one fuel filter at a time.
Step4Take off the primer handle from the injector pump and pump it until you get fuel pressure on the system. Be patient, this can take hundreds of pumps until you get pressure back on the system.
Step5Put the primer handle back on the injector pump and on the fuel filter assembly. Open the bleeder screw slightly to check for air.
Step6Repeat Steps 4 and 5 until you can no longer see air coming out. At this point you should see pressure at the primer pump after about five pumps.
Step7Reassemble and turn on the engine. It may run a little rough until the fuel is completely free of air.
Step 1 should be-put the battery on charge, or get yourself a good set of booster cables. Priming the system can take some time and cranking of the starter.