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Old 08-04-2019, 05:25 PM   #2
sc00ter   sc00ter is offline
 
Join Date: May 2017
Location: Norfolk, VA
Posts: 607
Are you 100% sure its the right spark plug for it? Not some random/cheapest plug on Amazon (aka-bootleg)? Heat range is very important. It could also be transmission related. Sometimes the torque driver gets hot from a lack of grease and does all sorts of fun things. If your taking it to who I think you are, they have a pretty good service bay. But, like you stated, doing it yourself and learning is much more rewarding. I would have to see the problem in person. Oh, and I would not ride it without the muffler. Any rattling could be just a busted loose cat converter. Shouldnt really hurt anything/cause issues like your describing.
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