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Old 04-08-2012, 10:31 AM   #62710
shaddix
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Joined: Mar 2012
Location: Central AL
Oddometer: 647
carb jetting Q

Hey guys! I looked at my spark plugs today and they were black. So going by this guide it says to run it at full throttle and check to see if they're black or white or tan as a first step to determining jetting needs. Now considering that my plugs are already black, will that mean that if it's too lean at full throttle they won't be white? Do I need to clean the plugs first before I test for lean/rich mixture?

Thanks!
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