Here I am

2007 6.7l fuel pressure slowly drops at idle

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P2579 code

Turbo Hose Anomolies

Full egr delete our nonprofit purchased Truck in 2012. It's always ran excellent.
Hooked on to 5th wheel for a guy for extra cash for our Nonprofit. Sitting there idling waiting for him to get in she died with some white smoke. Tried to crank no start and white smoke so replaced injectors and crossover tubes. Had to replace batteries, bled air she cranked right up with slight blue smoke at idle and a cloud stepping on her. Threw a P0193 so replaced cam sensor and high pressure sensor on end of rail, cleared the 1 code, smoke stopped....
Now she cranks right up at the turn of key, but idles for 15 -20 mins satarting at 5k then as time progresses will slowly lessen at 15-20 fuel pressure dips below 3k until she speeds a tad and dies around 27-2800.

Stuck in Salt Lake city pulling hair out... could fca, or perhaps hprv or anything haha less expensive cause problem?

Will try to add videos after posting

1st brief test


2nd test for 15 min Segment 1


2nd test for 15 min Segment 2


2nd test for 15 min Segment 4
 
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