Maintenance & Technical > KX500 Original
Hi I need help with my 1986 kawasaki kx500.
chrisorbics:
Ok i think 106 is a bit low but that is good that I know now. Thanks.
Do you think i should take the top end apart since is can see scratches on the piston? I have a new piston and ring.
chrisorbics:
I just got back from shoping around for a compression tester. I could only find one of the crapy ones that you have to hold on by hand with a rubber peice on the end. I don't think I could even fit the on top of my engine. There isn't much room. So I will have to wait on that. Thanks for all the help so far. I am still just stumped with this bike. Has anybody ever had or heard of a bike running so irratic?
hughes:
Hate to bring up the carb again but I just want to make sure you cleaned it. With jelled fuel in the carb it can be very hard to clean. The entire carb needs to be disassembled, all jets cleaned and all drilled passages in the carb body needs to be cleaned, float and needle removed. If the bike only runs or idles with the choke on that's a good indication that carb can't provide fuel through it's normal jets and passages. Does the fuel shut off valve work correctly?? report back on your compression readings.
gowen:
50 hours on a 21 year old bike isn't good. Mainly if the fuel has jelled.. Take the top-end apart, your rings could be frozen.. Your reeds could be cracked, your carb boot MIGHT be leaking. It's hard to say, but I'd pull the top-end apart just to double check.. I'm going to guess frozen or stuck rings.
But all this together, taking the topend apart is a good start.
c-152:
I agree with the others on this website that jelled fuel is a pain. I buy the carb cleaner in the gallon container so you can soak all the pieces for a while. Just be sure not to have any rubber pieces in there. I had a similar trouble with my RMX and I fussed with the carb for weeks until I tore it down, rebuilt the topend, cleaned it and put it back together. If the guy who owned it before you didn't premix correctly or used the cheap stuff, then it could be completely gummed up. I wouldn't change mains yet becaue if it used to run fine and now it doesn't, then that is an indication of something else wrong. Fine tune it later.
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