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Old 09-14-2017, 03:09 PM
Silver05 Silver05 is offline
Join Date: Apr 2017
Posts: 398
Member #16573
The one on the left is perfectly fine, it's clean, the red can be additives added to your fuel(octane boosters,racing fuel etc.) the other one is fuel fouled, means that cylinder is running to rich! Pick up a plug reader !
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