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Having and issue with a 07 6.0 liter. It has 70k miles on it and the other day it started running a little rough at idle. Jumping from 600 to 900 rpms. I got to where i was going and unloaded some bags and went to move it and it wont start. it will turn over and sounds normal for the first revolution but then it sounds as if it wants to run but rpms stay real low around 150 and dies.
I changed fuel filters the today thinking it was a bad tank of fuel. It started right today and i left for home. I stopped for a bite to eat and came out and tried to start it and it did the same thing wouldn't start. no check engine light though. HELP!