Discussion Starter · #1 ·
My 2002 trx400ex goes 1/2 throttle or 3/4 and then it bogs out. Sometimes it won’t even let my give it any throttle. I took the air box lid off and it helped so I put some holes in the lid. But it still did it after a little. Then I took the jets out and cleaned them. Could there be an adjustment on the carb or something? Could it be getting too much/ not enough air? Plus I just did a top end rebuild and it is a 426, so should it be ran on high octane? Or should I just buy a whole new carb becase they are pretty cheap. I don’t know what to do so any help would be greatly appreciated.