Harry K wrote:

George E. Cawthon wrote:
Frank Thompson wrote:
Any easy way to alleviate having to open up hand operated grease gun
once or twice per using up one cartridge of grease in order to remove
air which causes gun to pump like it is empty when it is not empty?

Don't know what kind of grease gun you have, but
it is either no good or you are doing something
wrong. Most guns have a plunger at the rear that
puts pressure on the grease to move forward. When
change the cartridge, you pull the plunger out
(and lock it in a slot), you put the cartridge in,
screw the top on, and release the plunger and
push it in. The built in spring continues to push
the grease forward. Perhaps the spring is broken
or missing. The only purpose of the pump is to
build pressure in the tube/hose before the
coupling. If you can unscrew the top without
loosing all the grease on the ground, then the
plunger is not working.

No, there is nothing wrong with the gun or how he is operating it. It
is a common problem with every gun I have had over the past 50 years.
Pumping the plunger does help but doesn't cure it.

Harry K

Yep, there are almost always a few air voids in a cartridge...