Smokin' Boxster

[jerryko27]

I have an '01 Boxster S with 55,000 miles on the clock. Two issues, I'm not sure if they're related. The last couple of days at idle speed, I hear a whine/sqealing sound from the engine as if pulley bearings or a belt is slipping. Doesn't happen all the time and not at all if the revs are over 1500. Also, the last few days at morning start-up a huge amount of dense black smoke comes out the exhaust. After a minute or so the exhaust is normal again. There doesn't seem to be any loss in performance. Thoughts. Are the 2 related or just coincidental? Is the dense smoke a signal that there is serious engine problems

[savowood]

Is it black smoke or white smoke? White would possibly indicate an AOS. Black, I'm not sure.

-Michael

[Steve Tinker]

With the engine idling, try to remove the oil filler cap. If it is difficult to remove (by being sucked in by a vacuum), there is a good chance that you need to replace the AOS (air/oil seperator).

Use the Search Button for AOS and you will get a lot of info as to what to do.