If the engine is running pumping the manual arm on the lift pump wont do much. Undo the nut directly ontop of the fuel filter housing with the motor running, dont take it all the way out diesel will go everywhere. Just back it off so that fuel dribbles out. Let some fuel run out and any air will escape with it. Once you have done this undo each fuel line where it bolts onto the top of the injector, let some fuel spray out each of those.
If there is air in the fuel line it wont run right. If that doesnt work, check that the throttle cable is adjusted right at the injector pump aswell.


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