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k2000x Added a reply to Kx250f 2015 issues
8/18/2026 2:38am Stock ignition system
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k2000x Started a new thread Kx250f 2015 issues
8/17/2026 5:34pm Hi guys and gals I’m having trouble with my kx250f. I got it as a basket case fully rebuilt engine timing set perfectly valves leak tested starts 3rd kick idle is a bit slow seems a tad rich tried adjusting idle with knob on throttle body and it has no effect whatsoever. What could cause this
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k2000x Started a new thread Crf450r tps issue
7/18/2026 5:58am Hi guys, I have a 2012 CRF 450 R that I got as a basket case and have rebuilt on starting it flashes eight times on the mil code light which indicates a TPS issue I have reset it at .5V and the lights still flashed so I replaced TPS altogether and still has the same symptoms. I’m also trying...
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k2000x Added a reply to 2023 YZ450F Fuel Pressure Regulator Failure
6/12/2026 4:15am I just found this on AliExpress: | Fuel Pressure Regulator For Yamaha WR250F XT250 YZ250 YZ250F YZ250FX YZ450F YZ450FX 33D1390700 00/33D1390701/33D1390702/33D13907 https://a.aliexpress.com/_mrEhXBd covers 2010-23 yz450f I got one but for a kx250f worked a treat
k2000x Started a new thread Prox valves who was the U.S manufacturer
6/8/2026 2:21am Hi I come across nos set of steel valves and spring kit from proX for my 2010 kx250f build. On the box it says made in the U.S.A my question is by whom as proX newer valves are made in Japan
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k2000x Added a reply to Starting and idle issues 2015 kx250f
5/26/2026 5:48am Was told that you shouldn’t touch that screw
k2000x Started a new thread Starting and idle issues 2015 kx250f
5/26/2026 2:25am Hi my idle is slow and I’ve tried to adjust it with the fast idle nob and it does nothing. Fresh engine after I purchased bike in a box takes 7 kicks to start and idles slower than recommended rpm
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k2000x Added a reply to 2022 RM 250 AF
4/24/2023 2:27pm Did you need to modify the y piece of the frame or only engine mounts