04 400 SPORTSMAN- RUNS GREAT AT IDLE AND LOW RPM--SPUTTERS AT MID RANGE, DOES NOT STALL, NO SMOKE. IF YOU LET OFF ON THROTTLE AND PUNCH THROTTLE HARD IY MAY ACCELERATE FINE AND GO WIDE OPEN WITH NO PROBLEM. IF YOU ACCELERATE SLOW IT WILL ACT UP. CLEAN CARB, REPLACED
CDI, REV LIMITER ETC STILL THE SAME

THANKS

 

Did you change the fuel filter? Did you drain fuel tank?

 

YES I HAVE TRIED JUST ABOUT EVERYTHING I CAN THINK OF. WHAT ABOUT A INTAKE LEAK BETWEEN CARB AND ENGINE

 

Why do you type in CAPS?

 

It is hard to say, it could be a million things. Keep looking and don't give up and post what you know and don't know.

 

<div class="FTQUOTE"><begin quote>Originally posted by: Koerbs

Why do you type in CAPS?</end quote></div>

He's yelling cuz mad at you Koerbs. [img]i/expressions/face-icon-small-happy.gif[/img]