250-500cc 99 Wr250

Got a 99 Husky WR250. It has been running great but recently its been having some problems. About mid-range to top end RPM it misses, chokes, and stutters out no matter what amount of throttle. Have had the carb apart a million times it is perfectly clean. Also tried moving the needle through out all 5 clip position and no change at all. Pulled the reed cage all looks fine, carb boot was cracking a little so I sealed it as there is no new unit available. Compression is good and new plug, can not figure it out! Any info would be a big help.

compression check it?

we had the same problem on ours, it turned out to be the emulsion tube and needle was worn. after the new stuff was fitted and a bit of carb tuning it really rips. Hope this helps

Compression was good about 150.

Oneal could you elborate on the emulsion tube and needle issue?

Where did you source your parts?

And are you running the stock TMX carb?

Hi banana yes im back using the stock TMX carb, i got my emlusion tube and needle (jet needle/ needle jet) from husky sport in the uk. But any husky dealer should be able to source the parts for you. Before changing the worn carb parts the bike sounded like its was drowing in fuel and wouldnt rev out And kept missing. pretty much how yours is running. Also one more thing to check, make sure the mountings on the coil are clean and tight. Hope this helps you out