Thread: Spark Plug Gap- Poll
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Old 08-15-2009, 06:18 AM
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Ron61 Ron61 is offline
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.039/.042 with a Jacobs Pro Racing unit. But since Jacobs is no longer worth anything I will be changing to another type unit one of these days. Also stay away from he Platinum plugs if you do have a Jacobs.I tried them once and it ran crappy as they threw off the resistance readings.

Ron
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