2003 kdx200 on a 2004 kx250 frame
Posted: 07:50 am Oct 18 2016
Hi,
I recently traded my klx250 for this flawless kx-dx hybrid minus the chamber which was dented and punctured in multiple places due to someone not knowing what they were doing trying to make it fit. Everything checks out but I am still unable to get it running right.
Here is what I am running:
FMF Gnarly Pipe (New rubber and copper gasket and springs)
FMF PowerCore 2 Silencer (Brand new packing)
35mm Keihin PWK (stock for kdx200 h models)
Stock KX250 Airbox (Clean and oiled filter)
I have eliminated every problem so now it has to be the carb. I have rebuilt the carb with new pilot and main jets, float bowl gasket, idle screw, mixture screw, jet block gasket, new needle, and cleaned it thoroughly with carb cleaner and a guitar string. Also, took everything back apart after first unsuccessful try to get it running to make sure everything was as/where it should be.
I rejetted to what FMF suggested (155/48) and no luck. Ran the idle screw all the way in and still no luck. Dropped the pilot down to a 35 and still too rich. The only way I can get it to idle is by using the throttle adjuster to bring the slide up high enough to let it breathe which I know is NOT the way you want to set your idle. Also, every time I pull my carb it is wet with gas on the intake side. I am thinking something is worn out internally (whatever the PO soaked it in was some nasty stuff, jet block o-ring was almost completely not there) but before I drop $200+ on a new carb I was wondering if anyone has had similar problems? Or have any ideas what is going on because I am out of ideas.
Thanks,
-Matt
I recently traded my klx250 for this flawless kx-dx hybrid minus the chamber which was dented and punctured in multiple places due to someone not knowing what they were doing trying to make it fit. Everything checks out but I am still unable to get it running right.
Here is what I am running:
FMF Gnarly Pipe (New rubber and copper gasket and springs)
FMF PowerCore 2 Silencer (Brand new packing)
35mm Keihin PWK (stock for kdx200 h models)
Stock KX250 Airbox (Clean and oiled filter)
I have eliminated every problem so now it has to be the carb. I have rebuilt the carb with new pilot and main jets, float bowl gasket, idle screw, mixture screw, jet block gasket, new needle, and cleaned it thoroughly with carb cleaner and a guitar string. Also, took everything back apart after first unsuccessful try to get it running to make sure everything was as/where it should be.
I rejetted to what FMF suggested (155/48) and no luck. Ran the idle screw all the way in and still no luck. Dropped the pilot down to a 35 and still too rich. The only way I can get it to idle is by using the throttle adjuster to bring the slide up high enough to let it breathe which I know is NOT the way you want to set your idle. Also, every time I pull my carb it is wet with gas on the intake side. I am thinking something is worn out internally (whatever the PO soaked it in was some nasty stuff, jet block o-ring was almost completely not there) but before I drop $200+ on a new carb I was wondering if anyone has had similar problems? Or have any ideas what is going on because I am out of ideas.
Thanks,
-Matt