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I have a '99 Big Boss 500 6X6 which has plug fouling issues. The machine will run well for several hours and then suddenly start fouling plugs very badly. I mean they are coated with soot and the bike won't get off of idle. Seems to do it when worst in warmer weather and traveling slowly. installed new carb, air filter, and still the same. Any ideas?
 

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Welcome to the board!:med:
 

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Welcome to the forums!
 
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