[T3] Puff of smoke

[Dave Hall]

Over years of owning aircooled VWs, I've had this happen occasionally.  The
brief puff of (oil?) smoke can happen at each cold start over a few months,
then just as suddenly stop happening.  It may be aggravated by being parked
on a side slope.

In an attempt to rationalise this, here is my theory:-

The rings rotate in their grooves, even though we take care to space them
evenly when assembling!

Inevitahly, the ring gaps will occasionally line up at the bottom of a
cylinder and allow a small amount of oil into the combustion chamber, which
burns off when the engine next starts.

It has occurred over such a long period without anything worse happening, so
I don't think it's anything to be worried about.  You can keep an eye on the
oil level to check it's not burning a significant amount.  If not, no
worries.

If it is actually white smoke, that suggests excess fuel - maybe your cold
start device is operating when it shouldn't (FI engine?).

Dave.
UK VW Type 3&4 Club
=================== 

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Bryon
Garvin
Sent: 22 April 2011 19:33
To: type3 at vwtype3.org
Subject: [T3] Puff of smoke

Hi all -

Sometimes, and I mean like maybe 1 out of 25 starts, I'll get a puff of
white smoke out of the tailpipe.  I never have continuous white smoke after
that initial start.  Is this something to be concerned about ?

I blasted two guys sitting at a sidewalk cafe the other day :(

 - Bryon, '71 Fastback
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