Based on my experience, I would suspect a head gasket leak allowing a
small amount of water/antifreeze mixture into one of the cylinder heads.
This mixture typically burns with a very dense white smoke, until the
cylinder is clear, then it disappears. The smoking phenomena typically
will not reoccur until the engine has had a change to sit, cool down, and
the gasket leak again allows water leakage into the head. If the leak
increases in volume, the next step in the progression is hydraulic lock,
that is, inability of the starter to turn over the engine.
Bob
64 MGB
59 TR3
> ------------------------------
>
> Date: Wed, 01 Aug 2001 13:34:59 -0600
> From: David Councill <dcouncil@imt.net>
> Subject: smoking start
>
> Just out of curiosity - what would make a car start with a nice cloud of
> smoke coming out of the exhaust, only to clear up after running for
maybe a
> minute? There is no sign of excessive oil consumption but then I have
> enough cars that each one usually only gets 2-4k miles per year, not
enough
> to get an idea of oil consumption with two to three oil changes per
year.
>
> The car is actually a Toyota Landcruiser but the engine is still very
> similar to a B engine - a straight 6 with pushrods, tappets, etc, so the
> problem shouldn't be too unusual to some of you out there.
>
> Its not a big deal, but with barometric pressure on the rise today, I
left
> a good cloud of smoke to kill any mosquitos within a 50 foot radius of
the
> car this morning. It won't smoke again until the next morning I start it
as
> it only happens on a cold engine.
>
> Any ideas?
>
> David
> 67 BGT
> 72 B
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