Maintenance & Technical > KX500 Original
Surgeing problem
AFASTboy:
It doesnt surge at low speeds it just surges when you let off the throttle from running it up at high rpm, plug reads perfect light brown Im sure it has to do with jetting probably to rich on my pilot because my idle is not effected by my idle screw and i thinks its getting to much fuel on bottom causing the surgeing.Went and got a smaller one took it home removed carb and old pilot jet and tried to screw in new and they must have given me the wrong style,wasted time again.Going to get the right one today.Ill let you know about the results
MIKECALDERA:
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It doesn't surge at low speeds it just surges when you let off the throttle from running it up at high rpm
Yeap, I'll take your bets its the KIPS by your exhaust sticking from carbon. 8)
Unfortunately, you ran a very rich main jet which you can put the blame on. If you ever fouled just one PLUG that should be a warning. :cry:
No Problem: I rebuilt my 02 500 three times already until I dropped a 162 main from 168. BIG Difference in Power and crisp throttle. And most importantly, NO(less) BLACK SPOOGE.
If you hold the throttle wide open no problem. It's only when you let off the throttle she starts to rev up than down. :evil:
Take 2 asprin and call me in the morning. IT"S KIPS BROTHER KIPS.
:wink: Mike
kawdude:
Do a search on this topic. Lot's of posts and lots of opinions. When I increase the main it gets worse. However the adjustment of the problem seems to be in the pilot jet or the air jet. A wore out slide could also cause the problem. Oh ready Gowen's sticky post. It's the longest god d**n thing I have ever seen.
AFASTboy:
Lowered my pilot jet to a 52 and man does it kick ass know it idles know and I can controll it with the idle screw and from a full speed run it comes down to idle perfectly smooth.Starts with two(good)kicks and just launches with the crack of the throttle.Im going to move my needle clip up from the third groove that its at now and see if that gives a little more in the midrange even though it seems perfect right now . Thanks for all the help guys and thank god it wasn't the powervalve,you had me scared as i was looking for a easy fix and it really was.
gowen:
52 pilot :lol:. I'm stuck on a 42 :shock: . Can't get much of an idle and still feels slightly rich. Assuming a port job is to blame, I'm unsure as my KIPS are perfect in operation. :-) But, kawdude is right, the pilot is usally to blame on the KX.
Glad you are finally getting it done.
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