Im not happy with the way my 05CR 250 is running at the moment.
It fouls up easily if im just riding slow even for a short distance and it never has been very crisp.
On the weekend even just sitting on the start gate for 2 minutes it would choke up even though i had just cleared it out. Although i have issues with it pinging. I dropped the needle one clip position but then it pinged worse so i lifted the needle 2 positions and it stopped it pinging and seemed to run ok on the track.
Its doing my head in not really knowing what to do and i know it will perform a whole lot better once its sorted.
I checked out the FMF jetting guide and they reccomended,
Pilot-35
Main-410
Needle-12-82 second clip position
Air screw- 1.5
At the moment it has
Pilot-40
Main-430
Needle-26-65.......(im guessing you go by the last four numbers on it)
Clip- 4th position....(down from the top)
Air screw- 1.5
I dont know what the standard jets are but have been told that it is one bigger than stock on the main and they go up in tens.
I think its stock apart from the FMF Pipe and shorty and i run 98 octane.
Any help or suggestions would be greatly appreciated if i haven't confused you all
Cheers Scotty