2004 6.0 Extreme Power Loss

[jnall63]

About 3 weeks ago I had a big blazer on my goosneck and had towed it about 30 miles one way and was headed back up the last long hill and dropped speed from 70mph to 30mph. Got out and it was boiling water out of the coolant tank, about a gallon, but the temp gauges for eng and trans both normal range. Truck has 130k miles, and as far as i can see has a reman turbo and icp harness update. Got another truck to pull trailer back and truck seemed normal, drove last week and truck would not pull itself up a hill. Cleaned the egr several times because of white smoke and stuttering before this. No CEL codes and turbo wheel spins freely and no side or endplay. Thinking the EGTs must have got really high and boiled coolant out of cooler but not sure. Still has really bad power loss but no smoke. Kinda long winded but thanks for any ideas

[mudrunninpig]

have you pulled the egr valve since this happened? if not pull it and see if it is wet, if it is your egr cooler is junk

[jnall63]

Not yet, it was really clogged last time. Thinking of an EGR delete kit. Would that cause the loss of power with no smoke?

[mudrunninpig]

when is the last time you changed the fuel filters?

[EssentialJuice]

subscribed...this sounds interesting. are you sure the turbo is working? there are no misses right? sounds like a turbo. make sure the back(exhaust side) vanes spin.

[jnall63]

change the filters about every 3k miles, found out the previous owner pulled a bobcat every day. im thinking he may have been running red fuel too, the low sulfur instead of usld, which i had to do one time with the fuel shortage down here last year. ran like crap. also use diesel kleen cetane booster in every tank.

[Diesel_Diagnostician]

Other than when the coolant boiled out from your degas bottle have you noticed any other coolant loss issues?

[jnall63]

EGR delete good, got from gillete and all was well. Talk about a pain to change a idler and belt thought.