my friend's yz250f recently has had a problem winding out. it revs ok down low, but it starts coughing and sputtering in the top rpms. pretty much just started doing it after a ride we went on. almost over night. same altitude, temp, etc. he had made no changes to fuel, jetting, exhaust, for quite some time prior to this problem. he's had a pmb endcap w/ SA on for almost a year. all esle is stock. i know this is kind of vague information, but have any of you guys experienced this with your 250f? any suggestions? also, any popular mods that are easy to do to it would be welcome as well. thanks in advance!
'01 250f sputtering on top
Started by wy4tt, Feb 02 2003 04:01 PM
No replies to this topic
Posted 02 February 2003 - 04:01 PM
my friend's yz250f recently has had a problem winding out. it revs ok down low, but it starts coughing and sputtering in the top rpms. pretty much just started doing it after a ride we went on. almost over night. same altitude, temp, etc. he had made no changes to fuel, jetting, exhaust, for quite some time prior to this problem. he's had a pmb endcap w/ SA on for almost a year. all esle is stock. i know this is kind of vague information, but have any of you guys experienced this with your 250f? any suggestions? also, any popular mods that are easy to do to it would be welcome as well. thanks in advance!
