Maintenance & Technical > KX500 Original

Only problem with my KX....

<< < (2/4) > >>

KXcam22:
Gdubb,
   With a 165 main your bike was likley jetted for a much higher elevation.  The Sudco website should have some diagams to help you locate the pilot jet. Probably a 58 will be about right. Cam.

GDubb:
Ok, I pulled my carb today, I checked the floats using your method, and as far as I can tell they are, or are at least close to parallel when the airflow stops. The new main jet I purchased is a 170, the pilot jet is a 55, and the needle(N82M) is on the second from bottom.  I was riding on the oregon coast so that would be right at sea level when I was having the problems.  I checked the jetting chart and it looks like I could be lean with the pilot? and maybe the clip on the needle could be wrong too??? Looking at the chart I shouldve been at a 172, 60, and the needle on the third. Could this be the cause of my revving when not in gear?  I'm sure you guys are beyond SICK of jetting issues, but I appreciate your help!

Cam, I noticed in your post that you said that the pilot issue would be more noticeable when the engine was hot, and indeed, it started after the bike had a few mins to warm up. Hopefully this is the cause then?

hughes:
GDubb,

Jetting has nothing to do with the fact that you had raw fuel leaking from the carb/float bowl vent lines. Jetting is metered fuel going into the engine. Make sure you get one problem fixed before you move on to something else. just my 2cents

GDubb:
Honestly I could care less if I leaked fuel all day long as long as the bike runs descent and nobody's following me around with a match. I'm more worried about the bike revving by itself when not in gear. So if the fuel leaking from the vent lines has nothing to do with that then I will worry about that later. I checked the floats the best I could and they seem to be ok, So what else could be the cause of the fuel running all over the ground?  I hate working on these d**n things when I really dont know s**t about them. If I didnt have a wife and kid I would go to MMI and then I would be the one answering all of your questions instead of feeling like I'm a pain in the ass. I wish I was Ricky Carmicheal so all I had to do was ride the d**n thing and let somebody else worry about the wrenching. But anyways, I'm done throwing my fit... any suggestions?

hughes:
those vent line are  atmospheric vent allowing air to enter or exit the carb bowl. If there is fuel leaking from one of those lines the carb is trying to flood out. Normally when a carb floods it enter the engine and causes it to run poorly. On dirt bike carbs when they flood most of the extra fuel is dumped out the vents and some will go into the engine. You could have a needle or seat problem. FLoat level could be good but if you have a worn needle it will not seal off when the fuel level rises and pushes the float up and pushes the needle into the seat. Basicly you have fuel running straight through from your tank and through the carb and on to the ground. The needle must seal when it is seated in the seat. Hope this sh*t makes some cents.

Navigation

[0] Message Index

[#] Next page

[*] Previous page