Hey, I just dropped a FMF Rad Valve into my RM250, hopefully trying to get a little more bottom end out of her. I installed it no prob, but after it warmed it really hesitates to about half throttle then just screams all the way to WOT. I'm almost certain this is a rich condition (kinda sputters, hicups then blasts off) I'm just wondering if I should look at anything but the pilot jet? When riding the bike when it was just warming up, it responded great, but after fully warming up I could feel it chug along at 1/4 to 1/2 throttle. The bike has totally stock jetting accept for the needle on the second clip(seemed kinda lean when WOT when I first got it).
I'm guessing a 55 pilot should do the trick, just looking for anyone else that rejetted after a FMF rad valve install..
I'm guessing a 55 pilot should do the trick, just looking for anyone else that rejetted after a FMF rad valve install..
