Loss of power, misfiring, then dpf full

Decided to do the drive to Albuquerque, leaving at 2:30am. Took 2 and a half hours to drive 80 miles, with the engine offering a bit more power then yesterday. Then with 30 miles to go the "DPF Full, service needed to clean" error went away and the derate ended. Changed to "soot level very high". It reduced again to just "soot level high" right before arriving at my final.

Still have the loss of power that I had before the DPF error, struggle to accelerate after 8th gear despite only having a 10k load. Still have the regen needed light lit up on my dash, but the truck still wont do a parked regen.

 

Basic symptoms I was having prior to the dpf full error. Felt like the turbo just wasn't working. Unfortunately no boost gauge on my truck and it isn't even an option the digital display, just speed and rpm.

Decided I'm not going to put the truck in the shop yet, hoping my luck holds out and the dpf improves by itself while driving. Am going to run a load that delivers Monday and do it then. Between Thanksgiving and the weekend, putting it in a shop now will mean several extra days of downtime.

Going to look up info on the delta sensor as well to see about troubleshooting it myself and maybe replace it myself.

 

Problem went away, came back, went away, came back, went away Wednesday and drove all day Thursday without issue.

Came back today and found a kenworth shop that wasn't busy. Pulled the engine codes and it's all fuel pressure related. They are thinking it's just the filters (which were changed 30,000 miles ago). Perhaps I just picked up some bad fuel somewhere.

Going to change them, clear the codes, do a regen, and see what happens.

 

It helped but didn't solve the issue completely.

Still get fuel pressure and dpf error codes, but at least parked regen (sorta) works again and not getting the bucking and power loss. Parked regen activates but doesn't heat up enough, dosing nozzle problem.

 

Parked regen normally took 1-2 hours, requesting a regen if idled for 14 hours. Or a half an hour of driving would clean it.

Although after the shop visit and fuel filter change, they regen'd it for 2 hours, then I drove it to a truck stop 20 miles away, and it regen'd for another 6 hours. But at that time it was giving a "soot level very high" warning.