Maintenance & Technical > KX500 Original

KX 500 faults and fixes thread

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tomasaki:
My '01 KX5 hasn't idled worth a dang since the day I bought it off the showroom floor.  I doesn't matter how I jet the thing either.  It frustrates the hell out of me since I do alot of tight woods riding and idle alot.  I have to keep revving it to keep it running.  Replacing the stock reed valve with Boyeson Power reeds seemed to help.  I still had to cut some of the spring off of the idle screw so I coud turn it in further. :?   Any ideas???

kawdude:
Mine has a similar problem but not as bad.  It will idle for approximately 15-30secs before it dies.
It's a pain in the rear.

1alldave:
It appears that fuel tank cracking may be a common problem. My 99 cracked and leaked near the left side shroud mounts this summer. The 97  that I sold my buddy  just cracked and leaked in a similar location. Has anyone else had this problem? Any one have a stock tank they want to sell?

mikesmith:
My tanks been in use since '95-no leaks or cracks.

gwcrim:
If you're having jetting and/or idling problems, post what jets you are currently using and where you live.

I live in Ohio and have a 52 slow jet.  My bike idles but I think it's still a tad too rich.

Also take a look for vacuum leaks.

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