whats the problem

[ridred4eva01]

i just got it runin the other day and ran great today i was jumping a jump we built it's in thick sand and when i drop the clutch to hit it acts like its hitting the red line it cuts ba baa ba what yall reckon the problem is it aint tachin out i know the revv box connection is fine please help this sucks man

[underpowered]

sounds like jetting. does it run fine in nuetral, or on other surfacaes? if not i say you did 1 or 2 of 3 things. 1 Airboot popped off carb, 2 clip came off the needle and needle is loose, or 3 the main jet fell out. all three of these would cause it to act like you said and have heppened to me at one time or another.

[Rico]

Sounds like the carb boot came off the carb. Very common when jumping, you loose all power when this happens but it's an easy fix. Look at the carb and boot connection from underneat the carb and you'll see if it's connected.

[2006-400ex]

mine does that 2.. if i try to pop clutch in 2nd and take off fast/spin out.. it kinda bogs down .. weres carb at on the 2006 models ? havent really took my seat off it yet

[ridred4eva01]

thanks yall i had really bad thoughts but sounda like not a big deal