[Healeys] great spark plug reading charts and tips

[Ken.Freese at Aerojet.com (Freese, Ken)]

Here is a pretty neat web site for plug reading.
I am trying to track down a big vaccum leak. I have been after it for a couple
of years, actually. I am going to try a mechanic with a smoke machine next. My
party smoke machine didn't work too well. I got a borescope for Christmas.
What I see in the combustion chamber is too scary and hard to interpret.

http://www.4secondsflat.com/Spark_plug_reading.html

Ken Freese
65 BJ8