Maintenance & Technical > KX500 Original

So my 04 is dead

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Johnniespeed:
If you are sure the problem is ignition related, and the key is not sheared in the crank, you could send me your CDI and I would install it on my 04 K5 take a little ride and send you back your CDI.
  I have a co-worker with a Banshee and no spark, after a new CDI and a new stator he found the kill switch was shorted out. Very expensive guess work.
  I have a CDI tester for a cr250, it consists of a known good stator,known good rotor, known good CDI,known good coil all assembled with a hand crank to spin it. I can simply place a suspect part in the tester and spin it while watching its spark plug . I have not yet made one for a KX500, but maybe someone on this site has made one.
  John

SMPKX500:
First thing I did was disconnect the kill switch to rule it out. I haven't checked the pin yet so that will be next. I thought about buying a monster coil to see if its that but anytime I ever had a coil go bad it never was intermittent. It worked or it didn't. If I cant get it going maybe I will mail it to you. I had one go out on my 250 and It was pricey.

KX500freak:

--- Quote from: SMPKX500 on December 03, 2008, 01:19:03 AM ---Its not a spark plug issue. And I have never fouled a plug. I run a NGK BR8EG. Stock jetting. Sometimes it will start, run perfect then just die. I think its the CDI unit. If it were the coil it wouldn't be intermittent.
Are the CDI the same though the years or do they change?

--- End quote ---


okay ,still i do not like the ngk brand ,one too many failures..
and for the cdi  you can take any cdi from a kaw500 /250 2stroke as far as i know ,for a test ride
goodluck

don46:
Not sure what year you have, but 90-04 are the same and 86-89 are the same CDI box. I don't know about older 250's but the newer ones are different and won't work. I've seen stators go bad, but haven't had a CDI fail, of course they do fail. Your right on the coil they rarely fail, you could use a 250 coil for testing, they may be a bit different in design but will work fine provided you ground it properly. Make suer you have checked the flywheel key to ensure it hasn't sheared.

apple:
I`ve had the same exact problem 2 times, spark coming and going and the bike dying in the d**ndest places like far far from the car. As for the kill switch, if it`s like my 2000 you have to jumper the switch, not just disconnect it to get spark. Mine was giving me fits before I found out it was the problem. Another time the bike just lost spark and wouldn`t start and then got the spark back for 6 rides then went away again. I cleaned up the ignition ground wire that bolts right onto the ignition coil mount bolt. Since I cleaned that connection up I haven`t had a problem and that was last year. Hope that helps.

Jack

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