Hey all, about two years ago I put a 39mm keihin pwk a/s on my 96 cr250 to replace the pj. Bike went on the backburner for the jeep anyway, recently got into it again and realized how bad the bog off idle is. Sounds like buuuurrrahhhhhhh as the power kicks in then it screams all through the top end. Decided to go through the carb to see what I did back then when I switched carbs. Pwk is from a 97 zuki 250. Heres what I found. Forgot to check the air screw when removing.
N1ED needle 2nd position
Putting it back together I threw in
R1369ls needle 3rd position.
Before I reinstalled I found a cracked reed and then behind that a crack in the piston skirt. Its got a fmf fatty w/turbine core 2 everything else stock.
Did the previous jetting factor in the cracks? Will my new set up be a good starting point when I put in a new piston and reeds? Thanks