Maintenance & Technical > KX500 Original
Hi I need help with my 1986 kawasaki kx500.
chrisorbics:
Hi ok I am going to look at the carb again and try to bring it over to someone with a compressor to blow it out. I have completely disassembled it and used the carb cleaner with the tube one the jets and all of the passages. Maybe there is still something in there somewhere.
The bike was running less than a year ago but the previous owner couldn't handle the power and it sat till I bought it. The origninal owner who he bought it off of had the carb drained and supposedly put gas in it and fired it right up. What do you mean when you say the rings or actually ring is frozen? It has the original piston and single ring in it. Do you mean that the ring is pushed into the piston and froze on the piston? The engine is obviously not seized because I have had it running many times.
I will have to look for a big thing of carb clean. I know I have seen wd40 and other oils in a gallon container but I will have to look to see it they have carb clean.
I just got a compression tester today but I had no time to do anything with the bike. I will do it tomorrow definately. I think I am going to take it apart anyway because there is definately something wrong. I will check the compression first though. Thanks for all the help so far. I will report back soon.
chrisorbics:
Hi I just did a compression test and got 180 psi. Wow is that too much. I guess the guy I bought the bike from was not lying about the low hours. Is that too much compression? My friends 1999 honda cr125 has about the same compression but he has a wiseco piston with two piston rings. My bike is all stock and original as I have said with one ring. I guess this means that it is the carb that is giving me the problem. I foregot to get the gallon container of carb cleaner. Hopefully I will get to the store tomorrow. Does anybody think it could be something else that is causing my problem? Is there still a posibility that the ring is stuck? Should I still take apart the top end? I am thinking the top end is ok. I will let you know what happens after I get the carb apart.
gowen:
Your ring doesn't sieze but, the carbon buildup from running rich or the like can crystalize or harden causing the ring to stick in the piston giving crappy performance, but 180lbs sounds a fair amount. I'd consider that normal.
Your next bet is to get that carb streightened out.
hughes:
--- Quote from: gowen on February 02, 2007, 12:55:52 AM ---Your ring doesn't sieze but, the carbon buildup from running rich or the like can crystalize or harden causing the ring to stick in the piston giving crappy performance, but 180lbs sounds a fair amount. I'd consider that normal.
Your next bet is to get that carb streightened out.
--- End quote ---
Gowen is telling you that the ring must float(move in and out) in the ring groove as it runs over ports in the cylinder, The rings expand as it compresses the gases in the cylinders
c-152:
On a bike that is that old, I would rebuild it. The compression is fine and it doesnt need rebuilt but by tearing it down, you will probably find the culprit. To me it sure sounds like something is gummed up in there. A good cleaning should clear things up. A teardown only takes a couple of hours. Thats what I would do
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