Maintenance & Technical > KX500 Original

first k5 very well used. need some advice

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younGun:
i just got my first k5 as a birthday present mostly cuz my dad was tired of hearing about the valves in my crf250.
the 500 is a 99 and it is well used. I've gone thru and attempted to tune it: new filter, jetted for what the chart
on here says(don't know how to do the needle clip tho), new carbon reeds(took the brass stops out now they are
making funny noises?concerned?), and new o rings high temp silicone and springs for the pipe(no washer just saw
that it needed one on here today). the exhaust port is very grooved, small leak from the base gasket, piston is
very rough looking on top, its leaking from the counter shaft, got a very concerning clack from the engine, and i
have very little top end. plug is dark and lots of compression(feels like). bike wont idle but it starts fairly easy.
also shouldn't this bike be intimidating as i weigh 150 lbs?? i rode a cr500 once and jeez but now my crf250 is
very equal to my k5? obviously something isn't right. now you know the whole story please help where do i even
start? i just want reliability and good 500 power

bens87braap:
Wait for the Gurus to see this post the k5 should s**t all over any 250  :wink:

Candyman:
Air leaks.... bad...
noises.... bad.
new top end and a full bottom end rebuild... good..
good running K5.... fast.
funny red bikes.... bad

younGun:
i heard the powervalve could be noisy is that bs or true? I'm trying too steer clear of the bottom end thing (little nervous and lacking special tools) gonna get a manual and gasket kit so i can pull the top end and check the crank. any way to fix the base gasket leak if there's damage?

sandblaster:
Your really not gonna know what you have till you get the top end off and give it a good inspection.
Take lots of pics and post them.
Yes, kips valves can make a lot of noise.
Be sure to get Cometic gaskets.

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