what would cause my 1985 yamaha moto 4 yfm 200 to backfire and spit gas out of the carb?

hellrazor

New member
I just got it and when it runs it spits gas backwards out of the carb and it backfires from the carb i cant figure out why. also when i have it in gear it dogs down and has barely any power but the compression is good yet. any help would be greatly appreciated. thanks
 
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