Lauralee: Here''''s your fix.
There WILL come a time when you''ll have to bleed the injector lines. Doing it from the low pressure side simply won''t work.
If air gets into these lines the only way to get it out is to bleed them. You can''t force it throught the injectors with any kind of air pump.
Of course, its nice to just keep the air out of these lines in the first place.