2009 kx450 idle issue

Create New Tag

5/17/2018 10:09 AM

Bike wont idle without high idle knob pulled. Turning the idle knob up makes the bike lean with a hanging idle. Going back go 22 turns out, it idles fine but dies if you push the knob in. Problem came on suddenly after a jump into a corner so i know its not a mapping issue. Motor is in good shape. I took it to the shop for a previous electrical problem which turned out to be a bad fuel pump wire. New pump is in. Only thing i can think of is the TPS got bumped out of adjustment.


5/17/2018 10:21 AM

Have you checked the fuel filter?


2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

5/17/2018 10:27 AM

Its clean.. new fuel pump


5/17/2018 10:29 AM

Is it possible to break the high idle knob? If its broke to where it stays extended, id think it cause an overly rich condtion when its pushed in and mot when its pulled