Colortune
Still readily available (Moss, VB etc)
My experience is that they help but aren't perfect.
I've never before heard of anyone having them fall apart.
They do warn about letting them get too hot.
> ----------
> From: johnc@nait.ab.ca[SMTP:johnc@nait.ab.ca]
> Reply To: johnc@nait.ab.ca
> Sent: Thursday, June 03, 1999 9:50 AM
> To: James Barrett
> Cc: tigers@autox.team.net
> Subject: Re: Whew!! Update
>
>
> Jim:
> I have never seen a video of a spark plug in action but years ago I bought
> a clear plastic plug that came in a kit and was supposed to let you see
> the
> mixture in the cylinder as it burned. There was a chart the showed
> different colors and indicated if your mixture was too rich or too lean.
> It
> was really neat to watch the spark but the thing broke in the spark plug
> hole when I went to remove it. Heck of a time to get it out. Can't
> remember
> if it told me anything or not. Anybody else remember these?
> Godspeed
> Jc
>
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