Fly_Racing Posted April 9, 2010 I have a 2003 Suzuki Rm 125 I ride at about 20m above sea level. Temperature ranges from 25 degrees celcius in winter through to 40 degrees celcius in Summer. I doesn't rain very often here and I don't like to ride in rain therefore no humidty exteremes. I normally ride motocross track or trails. I don't have any modifications. I have stock main jet at 460 but I havn't had time to check pilot as I have been told is only for idling. I just want prefect jetting for the bike. Share this post Link to post Share on other sites
aakmetz Posted April 9, 2010 what does your plug look like colorwise, and are you having any poor running issues? Share this post Link to post Share on other sites
Fly_Racing Posted April 9, 2010 It feels like it run's right but I switched it from a 540 main to a 460 main so any jet would've felt like a difference. I checked the plug and noticed it was oily and a carbon build up. Share this post Link to post Share on other sites
aakmetz Posted April 10, 2010 put in a fresh plug, and do some throttle chops and recheck it, throttle chop= run up through the gears at mostlly wide open throttle, then in high gear, kill the engine and roll to a stop, pull the plug and see what color it is. Share this post Link to post Share on other sites
