I'll belch a smoke screen regardless of how light I'm on the throttle very predictably about a minute into regen while things are trying to heat up and then I come to a long stop light. The moment I start moving, it'll belch smoke for about a minute and then clear up.
I also belched smoke like wastegate when regen started as soon as I crested a long 5-6% grade. It was 30F-something outside and regen was pouring fuel out on an ice cold CAT/DPF because my foot was off the pedal most of the 20 mile downhill run before I could pull over and terminate the regen. I showed a video to my dealer and they said it was normal. No codes = no problem. LOL
I just came back to San Jose from LA on I-5 . I got a regen just as I reached the bottom at Tejon coming down the I-5 Grapevine when regen decided to start. My EGR11 , EGR12 and EGR13 were in the low 200F from coasting all the way downhill. Then it tried to heat things back up going downhill towards Bakersfield even though they were cooking at 700F climbing the grade on the other side from LA. Fortunately no smoke, but it took a while longer to heat up since there was hardly any load on the engine. You'd think it would take advantage of the high heat going uphill.
'05 F150 5.4L FX4 SCrew
'10 F350 6.4L Lariat FX4 CC SRW LWB
Last edited by aquaman350; 11-21-2012 at 04:01 AM.