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White exhaust smoke
Hello everyone, I have a 2003 f350 6.0 that's blowing white smoke out of the exhaust. Let me give you a little info, truck is completely stock minus a 4" mbrp exhaust. So anyway Saturday I was doing rear driveshaft u joints, got all of that done Saturday afternoon went on a 20 mile trip had it parked for 2 hours or so and left, on my drive home I noticed white smoke coming from the exhaust so I babied it home just in case and look up an egr delete for it. Monday afternoon I started it and drove to work (5 miles approx) and had no white smoke on start up and a little bit when I crossed an intersection. I was not able to replicate anything for white smoke to come out the exhaust, tried babying it, getting on it, no smoke at idle.
Does anyone have any ideas what it could be? I was pretty set on it being the egr. ECT and EOT are within 6 to 8 degrees of eachother. When it sat from Saturday to Sunday, would that cause it to smoke when I drove it on Sunday? And why?
All help is appreciated! Thank you!