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'06 Cold Running Problems
I have a '06, 6.0 with 120,000 miles on it. Untill the engine warms to running temperture it runs rough/misses. It may bog down, not shift, blow white smoke, but never dies. It's not always consistent with the exact issues, but no power is a given while cold. When I park it and it cools even partially it's back to square one. Outside temperture from below zero to forty. Don't know about higher because it hasn't been that warm here yet.
The truck is never plugged in, always multiple cycles with the glow plugs. It happens with #2, 50/50, 70/30 and with or without power service for gelling. I've ran two bottles of Lucas injector cleaner through it.
Fuel pump one year old, filters six months (both), oil change every seven thousand miles with Rotella 15w-40.
I don't know enough about diesels to know where to start looking. Any help or insight would be appreciated.