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Discussion Starter · #1 ·
Noticing some popping from the pipes and the plugs were looking rich sooty. Not too long ago both plugs were looking spot on. Any idea on what could cause both to start running rich?

Hasn't run in the rain or been through dusty conditions.
 

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Discussion Starter · #2 ·
Checked the timing and its still spot on. Not sure why the pipes are popping now. I run it on choke to start it now with the colder weather, i wonder if that is causing the plugs to go sooty.
 

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Sorry to answer a question with a question... what is the make model? is the intake and exhaust stock? Have you made any changes? When did you notice the plugs being sooty? How long have the plugs been in the bike? Usually popping in the pipes indicate a lean condition. It is very unusual for an engine to go to rich on its own.
 
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