6 speeders - curious situation would like you thougts on.... Was out last Sun am early on my usual strafing run in Loudoun running at 9/10ths in front of 2 buddies in an M5 and a 335i in my '00 996 with 62K mi. Engine has no external oil leaks (new Rear seal and clutch at 50k Mi), only mod is a fabspeed exhaust. Occassionally I get small puffs of blue oil smoke at some startups if its been sitting, and there are small "flakes" of carbon on top of the water vapor that come out of exhaust. Car is meticulously serviced by Curry's Dulles whom I like and trust and they say this is normal.

Anyway, was accelerating to stay in front of the bomber bimmer, shifting from 4th to 5th at about 90 mph and a solid plume of smoke which started out black, then when white, then finished blue came out of both tail pipes in the 996. Looked like I had been shot by the red baron. M5 driver tells me Ive blown the engine - I put in the clutch and coast down to about 30 moh waiting for telltale warning lights, missing, anything. Nothing happens.

I keep rolling, slowly keep increasing rpms and drive at 5/10ths for another 5 miles and still no issue. I say srew it, hammer the sucker again, enjoy another 30 miles of 9/10ths and no issues at all.

I take it Currys past Mon, they find nothing wrong, say the engine is tip top for 62K, and hypothesize "oil surge" as the culprit: They explain oil surge is when somehow under hard acceleration oil gets into the INTAKE side then gets combusted and comes out the back. I red the 996 has a rev limiter on upshift preventing blown engines though nothing can prevent blowing engines on missed downshifts. Again I was upshifting.

No disrespect, but 'oil surge' sounds fishy to me as I dont see 911's with smoke screens under acceleration elsewhere. Any ideas?

- Alex

 

This sounds like the Air/Oil separator is going bad.

Go here for more info: http://mike.focke.googlepages.com/ai...torreplacement

Hope that helps.

 

VERY HELPFUL - thank you