Henry got it.  He's been appointed honorary Porsche guru of the month.

If it sits long enough, the oil from the sump tank on a 911 will overfill
the crankcase and slowly leak into the exhaust.  That's why when the car is
first started, it doesn't smoke, but once the exhaust gets hot, the oil in
the muffler starts to burn and smoke.  The quickest way to get rid of the
smoking is to drive it at speed for about an hour.  That usually cooks all
the oil out of the exhaust.

Believe it or not, this is the third long-sitting 911 I've seen this on.

Cheers,

Jeff

-----Original Message-----
From: Henry.Luhrs@Bruker-BioSpin.com
[mailto:Henry.Luhrs@bruker-biospin.com]
Sent: Friday, September 24, 2004 10:02 AM
To: jeff@vanagonparts.com
Subject: Smoking 911

Hi Jeff,
        If it didn't smoke after being in a garage for a few years,
there's something wrong. The oil always gets on the exhaust
manifold while in storage for long periods of time. If it hasn't been
run for a while, be careful of the fuel lines (even the metal ones) as
they can start to leak.

Henry
87 Syncro
91 Jetta GLI
89 Scirocco 16V
80 911