1999 rm125 bogs

[Cessnaman]

Hey guts I'm new here and am having a bit of trouble with my bike, it's a 1999 rm125 the compressons right at 120 which I know is a bit low, but it starts 1st or 2nd kick almost every time, has great mid and high end power and idols smooth. However when in a slow roll about 2 mph and you gunn it, it boggs down for a sec then takes off like a bat out of hell. It seems like it may just be running rich, I've played with the airscrew and it helped a bit but not much. Just wondering what u guys thought. Also I just cleaned the carb and cleaned all the jets.

Thanks, Mike

[MXtras]

The airscrew will fine tune the pilot circuit for off-idle performance but it only does so much.

If your screw is out from seat more than maybe 2.5 turns, you need a smaller jet.

If your screw is out from seat less than maybe 1.5 turns, you need a larger pilot jet.

The needle position has a minor affect in the lower RPM but it's more for the mid range transition, so your pilot jet is what needs to be altered based on what you describe.

Scott

[Cessnaman]

Awsome! Thanks for the info! I have a 165 jet I'll through in and see if that helps, do you think this will be to small?