2006 6.0 with 138K. New head gasket, EGR cooler and oil cooler at 95K. Added a coolant filter at 105K. Only recent service was new fuel filters (OEM) installed by me in early December and an oil change, a couple of weeks ago, which diverted from my regular oil. I normally use Delvac, but took advantage of a Ford free oil change ... couldn't look a gift horse in the mouth!
Truck runs excellent. On cold start (40-50*), truck idles without smoke. Once warmed up to 80* (ECT), she blows some white smoke on heavy acceleration (0-45 mph into traffic) and a heavier, thicker puff when I let off the throttle, but it disappears immediately. The white smoke clears up pretty quickly by the time the truck reaches 120* ECT and disappears until the next cold start. I noticed this for the first time on Monday this week.
Using my ScanGauge II, the truck cruises on the freeway at 70-75 and the temps are 191-193 ECT and 197-199 EOT. The temps rise and fall together and are pretty consistent in spread. While idling at a light, the temps get closer, with the EOT dropping to meet the ECT. FICM is a steady 47.5-48.5 volts. I added a quart of coolant yesterday to bring the level up to just below MAX and it hasn't moved yet. I have yet to pull the EGR valve to check for moisture in the intake.
I've heard it may be stiction, which I know the truck suffers from. I have been using Archoil to treat the stiction and have experienced a huge improvement in the way the truck runs. To be honest, if this is a stiction issue, this is the first symptom I've seen since using Archoil. Could this still be a stiction issue? Any suggestions?
Truck runs excellent. On cold start (40-50*), truck idles without smoke. Once warmed up to 80* (ECT), she blows some white smoke on heavy acceleration (0-45 mph into traffic) and a heavier, thicker puff when I let off the throttle, but it disappears immediately. The white smoke clears up pretty quickly by the time the truck reaches 120* ECT and disappears until the next cold start. I noticed this for the first time on Monday this week.
Using my ScanGauge II, the truck cruises on the freeway at 70-75 and the temps are 191-193 ECT and 197-199 EOT. The temps rise and fall together and are pretty consistent in spread. While idling at a light, the temps get closer, with the EOT dropping to meet the ECT. FICM is a steady 47.5-48.5 volts. I added a quart of coolant yesterday to bring the level up to just below MAX and it hasn't moved yet. I have yet to pull the EGR valve to check for moisture in the intake.
I've heard it may be stiction, which I know the truck suffers from. I have been using Archoil to treat the stiction and have experienced a huge improvement in the way the truck runs. To be honest, if this is a stiction issue, this is the first symptom I've seen since using Archoil. Could this still be a stiction issue? Any suggestions?