KX Riders

Maintenance & Technical => KX500 Original => Topic started by: medic500 on October 09, 2007, 08:24:05 AM

Title: wierd noise from 500
Post by: medic500 on October 09, 2007, 08:24:05 AM

Hey guys, I finally got to ride the k5 in the open dez last saturday after riding single track all summer, (never leaving 2nd gear). so anyway we rode close to 60 miles out at ocotillo wells(so cal dez) and during the ride i occasionly heard a knock after getting off the gas,at first i thought it was rocks hitting the skid plate, but i dont think thats it. i did not feal anything as far as performance loss but the noise concerned me. is this my paranoia? or should i be concerned? any ideas where its coming from?

Title: Re: wierd noise from 500
Post by: alan on October 09, 2007, 11:47:53 AM

So is the noise still there? I hate to hear anything new coming from my bike, it makes my wallet ache! :-o :x :cry: :oops: :-o :-(

Title: Re: wierd noise from 500
Post by: kx666 on October 09, 2007, 04:28:14 PM

sounds like predetionation. what fuel are you running? mabe check jetting, squish band, altitude???

it is hard to say without knowing more

Title: Re: wierd noise from 500
Post by: Albertan on October 13, 2007, 01:21:32 AM

I have a 2000 and no knocking issues, but I had an '85 that knocked like mad without octane booster, but it was most apparent under load, when the bike made a clicking or ticking noise.  Apparently years ago, the Kawasaki factory 500's had a choke mounted on the handlebars so that they could dump a lot more fuel in after an extended wide open stretch so they didn't seize when the throttle was closed.  I'm assuming everything else stayed the same for you -- jetting, fuel type, oil ratio?  Also, did you change elevation or temperature?  Lower and/or colder would lean out an otherwise perfectly jetted bike.

Title: Re: wierd noise from 500
Post by: Scargoes on October 13, 2007, 04:49:54 AM

Ocotillo is at/near sea level. I have to rejet my bike when I go there from my normal playground(CA's high desert). My 87 did that at times also. But I'm not sure if it was normal or my rod bearing/crank slowly taking a dump.

Title: Re: wierd noise from 500
Post by: 01KX5WOODSRIDER on October 13, 2007, 12:27:56 PM

    My 500 will knock once or twice after it gets run up too. I think its a
lean knock. I don't know if it hurts anything but it doesn't sound good!
I ride only in the woods at less than half throttle mostly and the bike is
jetted leaner than stock.

Title: Re: wierd noise from 500
Post by: kx666 on October 14, 2007, 07:40:39 AM

i just burns a hole in your piston...

poor fuel or improper jetting wil cause this,