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-   -   Reading Spark Plugs (http://www.clubcobra.com/forums/ignition/98126-reading-spark-plugs.html)

Tom Kirkham 07-05-2009 11:52 PM
Reading Spark Plugs
 
Here is an interesting video on reading spark plugs.

http://www.youtube.com/watch?v=fiMM2S0aADM

A lot of the same info only written out

http://www.dragstuff.com/techarticle...ead-plugs.html

iva bigan 07-06-2009 01:03 AM
Tom
Here is one of the dangers of running too rich.
http://www.youtube.com/watch?v=5MlkR2FXPvQ&NR=1

Iva bigan

priobe 07-06-2009 07:23 AM
Tom,
Great video.

But I have heard with all the additives and 10% ethanol that these reading are not obtainable?

Have you heard any different?

bobcowan 07-06-2009 08:05 AM
Quote:
Originally Posted by priobe (Post 963796)
Tom,
Great video.

But I have heard with all the additives and 10% ethanol that these reading are not obtainable?

Have you heard any different?
That's pretty much true. With modern fuels, alcohol, additives, etc, reading the plugs is not as accurate as it used to be. Signs if significant detonation, or significantly rich/lean are there. But for fine tuning it just doesn't work. Unless you're using leaded race fuel.


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