I followed the solution above, instead of using a syringe, I used a jug, held the pipe in a jug of water, then turned the iron on, waited for it to heat up then pulled the trigger, allowing the water to be pulled into the pump. I then had steam coming out if iron. Put the pipe back to original position, filled the water tank as much as possible, then operated the iron whilst it was still open. I let the pump fill with water, disconnected the water tank, switched the iron off, then put it back together. Connected the water tank, switched on, pressed the trigger, and waited, after a loud noise steam started to come out, now it's working perfectly!!
DJSimes, August 2011