2007 CRF250X with air box open, FMF Q4 exhaust, standard header, JD Jetting, and smog delete.
Rebuilt with OEM Piston, rings, valves Intake/Exhaust, valve stem seals, new spark Plug, adjustable fuel screw:
My old starting procedure was to hold kill switch and kick bike 3-4 times then full throttle 3 times to squirt fuel in cylinder.
Bike would start cold with choke and one kick.
Now when i do the same procedure the bike doesn't start for several kicks and i have to hit the start button to get it to fire.
Once running on choke the bike is idling high and sounds like it is missing on and off.
turn choke off and the bike will idle but also sounds like it is smooth and then has a slight miss, then back to smooth, then slight miss and continues to repeat.
Also the bike has a slight low end hesitation/bog when going slow and opening the throttle to full.
I have taken the carb off for cleaning and inspection and was clean but took apart anyway and checked jets and passages. also disassembled accelerator pump and checked diaphragm and passages. All were clear and clean.
Screwed air screw in all the way after the bike was hot and the bike didn't stall. Could the rebuild have changed the jetting required to run correct again? I have the suggested JD jets, needle and clip location, and fuel screw turns out.
I will check the accelerator pump timing next but I am looking for additional suggestions to the weird idle and bog.
Bike ran great after the rebuild, very strong and same as when it was new. Perfect idle and no low end bog.
After setting the winter now is running weird. No signs of bad fuel and residue due to ethanol gas.
What am i missing at this point???
Concerned with the none smooth idle that almost sounds like a slight miss (Maybe running to rich??).