[Healeys] Gunson Colortune

[steveg at abrazosdata.com (Steve B. Gerow)]

I bought 2 of them for #2 & 5 sparkplugs.

My experience was that when you adjust the mixture to the "bunsen" blue per the 
instructions, it's way too lean. 
When the mixture is adjusted to run properly, the Colortunes show all the way 
rich yellow on the left side of the scale.

Your mileage may vary.

-- 
Steve Gerow
Altadena, CA
BN6