Engine blewl smoke - 986 Forum - The Community for Porsche Boxster & Cayman Owners

hatch1517 · 09-23-2010, 01:44 AM

Hi I have a 97 986 was over taking a car noticed the engine check light come on saw smoke from the exhaust lots. It cleared after about two minuits engine check light still :dance on still expect oil over the oxygen sensor doing that dose not misfire any ideas what is going on??

kabel · 09-23-2010, 04:40 AM

probably an A/O (air/oil) Separator failure.
Very common item to go. I would not drive it. Have it flat bedded to your mechanic of choice unless you want to diy. Lots of previous discussions here on the forum regarding this subject.

extanker · 09-23-2010, 04:40 AM

scan it for codes....check all fluid levels

Kirk · 09-23-2010, 08:51 AM

Quote:

Originally Posted by kabel

probably an A/O (air/oil) Separator failure.
Very common item to go. I would not drive it. Have it flat bedded to your mechanic of choice unless you want to diy. Lots of previous discussions here on the forum regarding this subject.

I concur... sounds like the A/O failed or at least partially failed/cracked. I've seen one fail at the track and there was a LOT of smoke. But if you have smoke AND oil on the O2 sensors, then you're either looking at a failed A/O separator or something much worse inside the engine. I'd lean towards the A/O separator being the problem and get it replaced. Do a search as there is an option to upgrade it to a better unit.

Kirk