sparkplug reading - Color Tune

[Swayze]

when I ran a CO2 laser, the tune-ups we did, one of the last steps was to set the focus, the arc would go from a bright yellow to bright blue like plasma. what effect does changing the spark gap have on 'colortune'

byE
Mike
Swayze
mswayze at truswood.com
kswayze at bellsouth.net

----- Original Message ----- 
From: "Shannen Durphey" <shannen at grolen.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, March 16, 2000 6:49 PM
Subject: Re: sparkplug reading - Color Tune


> Spark plug with a "window".  I have one.  It's not for high rpm use,
> or sustained loads, or high temp stuff.  Reach and heat range never
> actually match the plug you're replacing.  But the idea is to watch
> the flame color to tune a carb.  It's fun, and it can work at times. 
> Really neat to use on efi, watch flame color go from yellow to blue as
> the ecm cycles lean to rich.  Eastwood Co. sells 'em.  They're on the
> web.
> Shannen
> 
> Carl Summers wrote:
> > 
> > Hi, Whats a Color Tune???
> > -Carl Summers
> > 
> > Click on this link below to see the easiest way to handle internet
> > transactions.
> > 
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> > 
> > -----Original Message-----
> > From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> > Behalf Of mike mager
> > Sent: Thursday, March 16, 2000 9:21 AM
> > To: diy_efi at diy-efi.org
> > Subject: sparkplug reading - Color Tune
> > 
> > The "New Color Tune" is here!
> > 
> > I was greatly relieved to find that TRF (The Roadster Factory) had the Color
> > Tune in stock (not out of production);  I got mine (with no shipping delay!)
> > for about 50USD.
> > 
> > Do any of you have experience with Color Tune?  David Vizard says that
> > sparkplug reading is a very unreliable way of setting mixture strength;  he
> > likes to use an EGO and a Color Tune.  I won't just automatically believe
> > everything that I read, but his suggestion does at least pass a first check
> > of reasonableness.
> > 
> > Mike
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