JustBeginning0124
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I know it’s not a go kart necessarily but the idea is the same and I don’t know where else to ask. Buddy of mine swapped a Coolster 125 GY6 motor out for a predator 212, the 4wheeler will move with no weight on it not fast but will move, as soon as you put weight on it, it struggles. I don’t know what’s causing it but there’s a loud backfiring when trying to accelerate and if you push full throttle it wants to die out. Now he thinks it could be the jets in the carb but he’s already bored them out as much as he could and it’s still doing it. Any advice would be much appreciated, I have a video of the problem as well as a picture of the TC/Chain sprocket set up. But the video won’t let me post on here I could email somebody the video if need be though