99 PSD cranks, misfires wont start
early 99 Powerstroke f250 with 250,000m, ran like a champ until the other day it sputtered misfired and just died in the intersection. Acted like it wanted to start but wouldnt. Had it towed to ford dealer. It had a recall on the CPS, so they replaced that, still not running. Fuel filter is good,Here is the diagnosis from ford, performed test found 1,3,5 and 7 fail, during test truck ran smoother, rechecked and found only cyl 1,3 fail. So they removed valve covers to check harness plugs, all connected (but put the wedges to secure plugs better for future) Reinstalled and ohm tested injectors, all test electronically OK, and I believe they Buzz tested as well, ran another test poppin code P1298, test recommends replacing IDM (but IDM cannot cause individual cyl failure, but can cause cyl banks to fail) ??? HELP is greatly appreciated! Replace IDM, injectors, IPR?