Color Tune is a neat idea, I have used it for years in many cars.
It consists of a sparkplug with a clear insulator which allows you to see
the actual combustion in each cylinder (one at a time). There is a color
chart provided to determine correct mixture. Combustion ranges from yellow
(rich) to light blue (lean). You simply adjust each carb to get the correct
color in each cylinder.
A great feature of this system is that you can see the mixture change as you
rev. the engine. A properly running engine with no load will have rich blue
combustion at idle and go to dark yellow (rich) on acceleration and return
to blue at any steady RPM.
You can use this tool to diagnose many problems, you are actually looking at
the combustion.
Walt
1974 J-H Project
1983 Porsche 928
----- Original Message -----
From: "L.Amos" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, May 15, 2001 4:05 PM
Subject: JH Carb Tuning
>
> Hi all,
>
> The two methods (other than by ear), mentioned here on the list, to tune
and
> adjust your carbs (mine are DelOrtos) are Color Tune and using a
> Man-0-Meter. Could some one explain what each of these tools do and do you
> need both or will one or the other do?
>
> Thanks in advance,
>
> Lee
> 74JH5
> Houston
>
>
>
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