Changed Glow Plugs, now loss of power!

[Bhink]

Help,
Last week I changed my glow plugs and when I ran it all of a sudden power dropped and the engine was running rough. I tightened the clamp on the hose going into the turbo and everything came back to normal. I drove it for a couple of hours then the next day the yellow service engine light came back on and have a drop in power again. It idles rough and I'm really only topping off at 70 mph. I re tightened the boots and clamps but still running rough. Any Ideas on where to start to look.

[sldghamr]

those symptoms could be the result of a dying IDM (injector driver module). get codes from your computer to be sure.

[greasltn]

What engine? Any mods?

[Bhink]

7.3 with no mods.

[CHUCK]

UVC harnesses....may have accidentaly knocked one loose, or could be a burt connector in the harness....may have got a wire to colse to a rocker or spring, and its rubbed thru the insulation...causing a short

[Bhink]

What code am I looking for if this is the case?

[Bhink]

ok just got codes ran and it came up with a P0603 and a P1316

[ianstew]

def check your valve cover harnesses and under valve cover harneses

P0603 - KAM memory loss

P1316 - Injector Circuit/IDM Codes Detected