Well just a update for others that might have this problem. The factory fuel filter was the issue.All I use is Fleetguard (Cummins) fuel filters. This filter only had 2,600 miles and change on it! No water in the bowl,no sedimate in the housing,Standyne in the tank,so I do not know what gives?
I have been working on Diesels sense the mid 70's so I am not a rookie.It just blows my mind the trouble shooting time thinking it was other issues.
I now have the 17psi idle back and 10 psi WOT.
I always put a fuel pressure gauge on the pumps or on the outlet but not this one.It will get one!My 200 FASS had a taped port on the last one I installed but do not notise if this one has one?