Hi all. I just buttoned up the hvlp piston pump from the hungry diesel and man was that an easy task. I do have a few questions though post install. I noticed that the truck idles a little higher than with the diaphragm style pump. I assume that is because of the higher volume of fuel? Also before hand when I bled the fuel via the tapped banjo and would get a little bit of air. Would a worn out oe style pump cause that?