you are totally wrong and seem to know nothing of what you are talking
about, basing all of your comments on "urban legend"

Lead in gasoline has nothing to do with "black smoke" that comes out of a
car. Black smoke comming out of a car is poorly combusted gasoline, due to
an over rich mixture. This is a carburator problem, and has completely
dissappeard (will 99.9%) with EFI.

Lead in gasoline is actually MUCH BETTER for ALL ENGINES because it was the
lead that had a propensity to deposit on the intake/exhaust valves (not in
the cylinder/pistons because temps too hot), you were basically assured a
lifetime of properly seating (soft) valves. When the switch from lead was
made we went to (hard) valves which now must be adjusted and their seats
replaced eventaully. The ONLY reason we switched from lead gasoline was
because the content of lead in the soil of highly populated areas was rising
signicantly as the automobile #'s in the U.S. skyrocketed in the
40's/50's/60's.



"E. Meyer" <e.meyer@ieee.org> wrote in message
news:BB6D0517.D666%e.meyer@ieee.org...
> On 8/23/03 10:35 AM, in article
bi81lm$679b0$1@ID-177997.news.uni-berlin.de,
> "bob zee" <cam509@linuxmail.org> wrote:
>
> >
> >
> >
> > "E. Meyer" <e.meyer@ieee.org> wrote in message
> > news:BB6C4C80.D56B%e.meyer@ieee.org...
> >
> >>>
> >> Blowing out the carbon ceased to be necessary when they switched to
> > unleaded
> >> fuel. That being said, I still do it whenever I get the chance, just
> > 'cause
> >> its fun.
> >>
> > not to pick on *you* directly, mainly i needed to put my opinion out
there
> > for the world to see. :~)>
> >
> > there has NEVER been a reason to blow out the carbon on any engine. if
it
> > is tuned right, it will never have any carbon to deal with! this is
true
> > from the ancient in-the-block-valve technology of my lawnmower right up
to
> > the I-VTEC technology of my honda. carbon is an symptom of a problem
> > elsewhere. mixture too rich, engine never up to operating temperature,
etc.
> >
> > oh yeah, since i brought up the briggs & stratton engine, ever notice
the
> > spark plug on your mower just loaded with carbon? yes, they set them
things
> > up at the factory to be extremely rich. how do you blow the carbon out
of
> > it? :~)>
> > they are set rich so that they run cooler (ever notice your mower seems
to
> > cut better when it is cold outside?) a lean briggs on a 95 degree (F)
day
> > will melt in no time!
> >
> > my wife would never buy the 'blow the carbon out' trick...
>
> You obviously never owned a '55 Oldsmobile back in the days of leaded gas.
> Two weeks of city stop-n-go driving in that car and you were lucky if 6 of
8
> cylinders still fired. The '63 was no better. I used to enjoy watching
the
> local cops floor the '66 Dodge patrol cars at each traffic light to try to
> blow them out. But all that ended in the early '70s when the switch was
> made to unleaded gas. No more lead deposits in the cylinders.
>
> I agree with you now. Modern engines (using unleaded gas) do not build up
> carbon deposits anymore unless they are seriously out of whack.
>
>