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Old 06-17-2007, 11:48 AM   #2
Siper2
Scooby Guru
 
Member#: 1134
Join Date: Mar 2000
Chapter/Region: MAIC
Location: Dillsburg, PA
Vehicle:
2010 Legacy GT Ltd.
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Pep Boys and other places sell plug gapping tools, they look like this:



Now I'm sure these are cheap and I'm not sure about reliability. But who knows. You slide the end of the plug over the edge, and slide it up to the measurement you're looking for. It will widen the gap as you slide it across.
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