No Power at the top of the gear

KTM SX 125 discussion forum:


No Power at the top of the gear

No Power at the top of the gear 
Kevin said 2012-08-11 01:55 
 
I have a 2003 KTM 125 SX and I´m having a problem at the top end of all gears. It just kinda breaks up and the rpm´s drop, then come back up, then drop again. Could this be a carb jetting problem. I just found a jetting chart, and figured out that the carb is set up for 70 degrees at sea level. Ive been running it bewteen 80 and 90 degrees at sea level. It also has a pro circuit 304 shorty silencer with a stock pipe. comments and suggestions?? 
 
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