Some pumps simply require more effort to bleed the air off than others. Some you can just floor it and crank and they will clear. Others you need to leave all the line fittings loose at the injectors and crank like crazy with it floored till you finallly get some fuel to appear at an injector, then tighten that one down and crank some more till you get fuel at another , then stop, tighten it down, and repeat the process till you either get fuel at all holes or it fires up on you, then tighten the rest. This process can take stopping to re charge the batteries once or twice on a real ornery engine and you can end up spending a couple of days fussing with some by the time it's all done. There is no pat formula for quick bleeding, every engine /pump combination is going to be different each time.
If you are unsure about the output of your lift pump, I have a rig that works nicely for bleeding that you can make up with a boat fuel tank and line with the priming bulb, with a filter inline Make suer the hose is long enough to reach the tank while set on the roof. then attach the hose directly to the injection pump inlet ( or clamp it around the end of teh steel inlet line to the IP) and then have someone crank the engine with accelerator floored while you pump the priming bulb like crazy. You should get fuel leaking out the lines quickly . I've used this method for years on trouble bleeders.