I just bought a 1993 KDX, it has a strong midrange, but crackles and spits at idle to 1/4 throttle. Also it is all I can do to get it to idle. I need to turn the idle screw all the way in.
At the end of my second ride it seemed to be fouling the plug. I ended up pushing it about a hundred yards and coasting it home. I bought a new plug and decided it was time to jet it properly. It had a 42 slow and a 165 main with the clip at the top notch. I checked the reed valves and they are looking real good. No cracks or broken edges. They are real tight and look new. The bike has a new sleave and piston. It has good compression. It has an aftermarket pipe with an FMF silencer. I tried a 45 slow jet with air screw 2 turns out and it ran a little better on low end. I then tried a 170 main and fould the plug quick. I went back to the 165 main and dropped the click one notch from the top. I am now having trouble even keeping the bike running.
It has been a long day and any suggestions would be great. I am gonna battle with it agian tomarow. I need a game plan. HELP! :whiner:
At the end of my second ride it seemed to be fouling the plug. I ended up pushing it about a hundred yards and coasting it home. I bought a new plug and decided it was time to jet it properly. It had a 42 slow and a 165 main with the clip at the top notch. I checked the reed valves and they are looking real good. No cracks or broken edges. They are real tight and look new. The bike has a new sleave and piston. It has good compression. It has an aftermarket pipe with an FMF silencer. I tried a 45 slow jet with air screw 2 turns out and it ran a little better on low end. I then tried a 170 main and fould the plug quick. I went back to the 165 main and dropped the click one notch from the top. I am now having trouble even keeping the bike running.
It has been a long day and any suggestions would be great. I am gonna battle with it agian tomarow. I need a game plan. HELP! :whiner: