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Old 04-01-2012, 07:24 PM   #194
FocusBoy58
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Quote:
Originally Posted by Brabs_Weather View Post
In the owners manual it says the spark plug gap is:

2012 .035 c/r 12:1
2011 .051 c/r 10:1
2010 .051 c/r 10:1

Spark plug gap is determined by your ignition and compression ratio. As the Focus C/R has gone up the gap has gotten smaller. The higher the compression ration the harder the ignition works to spark. On the performance mods that some have done .08 (~.043) would be the largest over gap that would provide the best performance. You still have several variables like fuel type, octane and even brand of fuel.

New to the FF but the same principle on every car I have owned.

1964 Chevy II Nova
1980 Chevy Monza Spyder
1990 Dodge Colt
1993 Nissan Altima
1995 Acura Integra GSR
1997 Mercury Mountaineer
2000 Toyota Solara
2004 Toyota Solara

Current
2004 Ford Explorer
2008 Ford Edge
2012 Ford Focus
Actually anything before spark blow out is the best you cant just put a certain number on it. Some cars blow out sooner then others. .010 is playing it safe past that you get towards the area that you could have inability to make park. But mine are at .060 with no issues right now.
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