No I have not but I would think it would show on the scanner as a bad percent. Do you think it could be a bd injector even though it doesn't sho up in the contribution test?

 

How many miles does "almost new" mean?

Plugged fuel filter?

Double check to make sure all injectors are still plugged in tight. Double check the connection both externally and internally at the UVC (Under Valve Cover, where the wires plug into the valve cover) harness.

Sounds like a fuel delivery issue . . .either electrical to injector (not most likely, but possible), bad injector (i've seen some do this before, but they usually do it from day one), or issue with the high pressure oil system.

Make sure the stamped nut is still tight on the IPR, check all connections on ICP and IPR.

Check oil return from each injector while idleing (pull valve convers and watch the oil spurt out of the deflectors) look for one that flows a lot more or less than the others.

Could also be a lack of air supply (but not super likely), air filter dirty/restricted?

Let us know.