smoking

[quk@sievers.com (Phil Payne)]

In message <199610050032.UAA15059@host.osha.igs.net> "Lino M. Valadas" writes:

> Can anybody shed some light on the following problem with my 86 5kQTW. 
> When I start the engine after sitting all night, I some times (80% of the
> time) get a puff of smoke out of the exhaust (sometimes more like a cloud).
> Aside from that the car doesn't burn oil. (I use Mobil1 15W50 in the
> Summer).  My service manager suggests leaking lifters.

Get some to drive behind you and observe gear shifts.  If they see a tiny puff 
each time, it's probably the valve stem oil seals.

> I personally think its the Turbo leaking oil into the intake manifold 
> (thru the rubber hose).  The reason I think that is because I see oil there
> (not good).

There's always _some_ oil in the inlet system of a turbo car.  It's very hard 
to say how much is "too much".  

> If it is the turbo. Should I worry about it.  I get lots of power.  I can
> get the boost to 1.3 fairly regularly, once I saw 1.4. All original

And then you said that ...

Standard advice - pull the turbo -> intercooler hose at the intercooler end, 
and feel inside the intercooler.  Oil and slime is not a problem.  Anything 
gritty - worry. This is not the most likely cause, but the potential 
consequences make checking for it _highly_ advisable.  The odds are that you'll 
find nothing at all.  If, however, there's grit from turbo vane abrasion, 
remember that the next mechanical component this air passes through is the 
throttle - then it's your inlet valves.

If you haven't been observing the 40 second to 2 minute idle to cool the turbo 
after driving hard, then it could be the main turbo bearing.

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club