Originally Posted by
unworthy1
sometimes these "screw on the tube" style injectors have air-pocket issues (so can the metal can "Dualco style", for that matter). You have to work out the air bubble(s) by squeezing the plastic tube and working the plunger before you'll get any grease to flow.
Thanks. I suspected something like that. I will work at it more. I just figured, it did not create a powerful enough vacuum to move the grease adequately.