Not sure I can help, but thoughts out of my head would be;
What do you mean by degreased the engine? What stuff did you use - and where?
Won't dwell on why you pressure washed (or why you warmed it up prior) ... but how badly did you pressure wash? Meaning were you being careful or directed force right onto parts? Did any clamps come loose? Did water get forced into the turbo? air intake? ecu?