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Old 02-02-2008, 01:55 AM   #18
CyFi6
3" Exhaust
 
Join Date: Oct 2007
Location: SLO
Posts: 234
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i bet the purpose is to keep debris and liquids out of the spark plug tubes since its so hard to get out once its in there, and if you remove the plugs when theres stuff in there itl fall into the cylinder.
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