Once Again...KLX 250S Cold Start...Help!
So, I bought a 2009 KLX 250S with a CVK carb. It didn't run bad, but not great either. I added 87 with 10% ethanol and some Seafoam. It started running like crap, and upon removing the carb (who the **** designed that setup!) found green grime throughout the carb.
According to the local Kawasaki service guys, Seafoam doesn't do well for my situation. So, I cleaned the grime out of it, put a .038 pilot jet (original is .035) to address the cold start issue (per suggestions on this forum).
It is still really finicky about starting, but once it does, it doesn't even need to warm up. It just idles at about 1100 RPM. It's quick, responsive and when I let off the throttle doesn't sputter, stall, and it's great at high RPMs too!
I've check my spark plug (OEM NGK CB8E) and it's dry, nice brown and sparks well. I'm going to put a new one in it just in case.
I've tried the lean the bike to the left to let the bowl fill.
Ironically, it seems to start when the choke is in, but I've tried both ways.
It's about 60 degrees in the Seattle area right now, so it's not too cold.
Because it idles and runs so well, once it starts, and the plug is clean, I think my air/fuel mixture is good.
I also added the wire from the battery to a solid frame ground to get good cranking (again, a forum suggestion) and have the bike connected to a battery charger while trying to start it, just to help keep the battery up. Oh, yeah, new battery too.
I haven't added a switch to turn off the lights while starting, because I don't think it's a spark issue, but I well just because the lights drain the battery so much during the starting process/attempts.
So, all you KLX CVK Gods...what say you??
Last edited by sforeaker; 04-10-2019 at 02:18 PM.