Why is it doing this

[traxxas t-maxx]

Okay so I was running my nitro duratrax evader and it had great low end power it would pull wheelies and not even think, but if you rode it about half way out it would just cut out. It had a great stream of smoke but anywhere from about half throttle to about three quarters it would just cut out bog rite down and slow way down. When it let off the throttle and hit it again same thing what do you think it is?

 

[Rolex]

Your LSN is fine. You need to start adjusting your HSN. If it's pretty new you'll need to lean it a little bit at a time.

 

[Lessen]

Yep, you're HSN is certainly too rich.

 

[traxxas t-maxx]

How much should I lean it out like a whole turn or more or less then a whole turn. I drove it and tryed leaning it and I didn't go much past a whole turn.

 

[MotoGod]

A whole turn is leaning it out a LOT. Go in 1/8th turn increments until you can go from a dead stop to wide open throttle and not have it bog anywhere in the RPM range. Make sure the engine is warm before you start tuning it as well. Never tune a cold engine.

 

[olds97_lss]

Just to back up MotoGod, these little engines require very little adjustment to make a difference. 1/8 turn at a time, then run it a for a little bit to go from idle to WOT a few times and adjust again as necessary. Each time, run it a bit so it can clear out any built up fuel in the engine/pipe.