I cannot figure this out guys. Last year it was doing the same thing. It starts, idles, and drives slow, but when I give it more throttle it bogs down and won't really open up a go. I put new fuel lines on the motor last year because they were cracked and leaking. I thought that was the problem but apparently there is more to it. I wish I had more specifics to help you guys help me but if you could just give me some ideas I would appreciate it.