996 C2 blows smoke when shifting from 3rd to 4th

[bdknights]

I have a 2002 996 C2 Cab with a 6 speed and 50,600 miles on it. I was occasionally experiencing the "smoke at startup" issue mentioned by others in the forum. More recently, I was shifting from 3rd to 4th gear on a spirited drive and a lengthy plume of smoke came from the exhaust. It happened twice in the same day. I looked at Renntech forums and saw it was likely the AOS so I took it to my mechanic for diagnosis. He diagnosed it as the AOS and replaced it last week ($683). Today, I was driving it in a spirited manner and shifted from 3rd to 4th (at almost 7000 rpms) and experienced a large plume of smoke from the exhaust again. Any thoughts of what might still be causing this? Any help would be greatly appreciated.

Edited July 25, 2010 by bdknights

[Loren]

Once oil gets into the intake it can take a while to burn out.

I would give it another week of driving and then if it is still smoking take it back to the same mechanic.

[bdknights]

Once oil gets into the intake it can take a while to burn out.

I would give it another week of driving and then if it is still smoking take it back to the same mechanic.

Loren - thanks for the recommendation. I did send a note to my mechanic to get his input as well. Hopefully it is just a matter of burning out anything that might be remaining in there and not something more serious.