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Discussion Starter · #1 ·
I have a 2001 r6 and by process of elimination, Im trying to get it running better and better as I go.
I noticed all my plugs have normal carboned up residue , except for the plug to the # 4 cylcinder is clean and un carboned .
What all issues could this possible indicate?
#4 not firing?
I check all the gaps and all the plugs to insure they are the proper plugs.
I was hoping someone could help me on this, as it doesnt say much in the repair or shop manual
 

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