redsox
07-20-2013, 09:40 AM
I need some advise on how to adjust the carb on an 85 200x. i'm usually ok, but this is giving me a pretty hard time. here's the back story (as if anyone cares) I bought a cheap 200x a little over a year ago that needed some work. its not my main machine and it took a back seat to other projects. also of note, it ran ok when i bought it. it leaked gas, because of a stuck float, but, as stated, it needed work. also, it would rev high, or sometimes low, and stall out. idle adjustment was very inconsistent. thing seemed to have a mind of its own. well, i did a clutch on it, fixed the wiring, did some paint and an exhaust. thing is looking much better. now, to the problems..
i rebuilt the carb. when i did, i noticed that the slide had an ugly dimple in the tapered section where the idle adjust screw touches. someone had really cranked it in there. i attributed the crazy variations in idle to this dimple. i filed it down nice and neat and i have a nice tapered slide now. i put it back together. at first, it started first kick but revved at extremely high rpm. crazy high. i realized that the cable was incorrectly routed. i got that solved, and now it starts with the choke on, idles for a few seconds, and dies. i can rev it a little, but it dies. it sounds like it runs out of gas. i've adjusted the main and the idle to the max and they have no effect whatsoever. its like i can do whatever i want without any changes. do i move the needle, and, if so, which way? i'm on the middle clip now. jets? how do i know? i'm pretty good with this stuff, but this one has me twisted.
some things to consider
1. i have no idea whats been done to this engine. the plastics and tank both had wiseco stickers on them to the point where i think the previous owner had stock in the company. the few times that i drove it, it went really good. its the only 200x ive driven, so i dont have any comparison. but it had giddyup.
2. i changed the exhaust, but not a drastic change. the head pipe is the same, but a dg muffler is on it now instead of stock (which was dinged up)
3. i took a minimal amount of material off the slide to smooth it out, but it has changed.
4. i replaced the main jet with whatever size came in the kit. i think i still have what i removed and i'm going to check now. also, i'll check to see what size i put in.
5. i'm getting fuel. new filter, clean tank, new lines, checked 100 and ten times. i'm gettin' gas, and its fresh.
6. air filter/air box is good. unobstructed, no issues.
i rebuilt the carb. when i did, i noticed that the slide had an ugly dimple in the tapered section where the idle adjust screw touches. someone had really cranked it in there. i attributed the crazy variations in idle to this dimple. i filed it down nice and neat and i have a nice tapered slide now. i put it back together. at first, it started first kick but revved at extremely high rpm. crazy high. i realized that the cable was incorrectly routed. i got that solved, and now it starts with the choke on, idles for a few seconds, and dies. i can rev it a little, but it dies. it sounds like it runs out of gas. i've adjusted the main and the idle to the max and they have no effect whatsoever. its like i can do whatever i want without any changes. do i move the needle, and, if so, which way? i'm on the middle clip now. jets? how do i know? i'm pretty good with this stuff, but this one has me twisted.
some things to consider
1. i have no idea whats been done to this engine. the plastics and tank both had wiseco stickers on them to the point where i think the previous owner had stock in the company. the few times that i drove it, it went really good. its the only 200x ive driven, so i dont have any comparison. but it had giddyup.
2. i changed the exhaust, but not a drastic change. the head pipe is the same, but a dg muffler is on it now instead of stock (which was dinged up)
3. i took a minimal amount of material off the slide to smooth it out, but it has changed.
4. i replaced the main jet with whatever size came in the kit. i think i still have what i removed and i'm going to check now. also, i'll check to see what size i put in.
5. i'm getting fuel. new filter, clean tank, new lines, checked 100 and ten times. i'm gettin' gas, and its fresh.
6. air filter/air box is good. unobstructed, no issues.