[Vwdiesel] Inj pump internal pressure

[Libbybapa at wmconnect.com]

I kinda remember reading a while back in a thread that inj pump internal 
pressure is determined by the orifice in the outlet banjo.  If I recall correctly 
also the internal pressure drops as the pump gets older detrimentally 
effecting pump timing over the whole timing advance curve.  How about making a special 
banjo with a fine thread set screw to adjust the orifice size in order to 
compensate somewhat for pump wear?  Possibly one could get better resolution of 
adjustment running the threads at an angle.  Does any of this make sense to 
anyone?  Anyway, I'd love the refresher course on the subject, as it is a vague 
memory at this point.
Andrew