Maintenance & Technical > KX500 Original
bike just doesnt seem right.
Motorrad:
Float level being too high comes tommind also... Blubbery bottom, having to lean out main....
Always check float level externaly.. Like climer says (piece of hose)
Motorrad:
--- Quote from: alward25 on April 18, 2011, 04:59:23 PM ---A 155 main sounds way too small even for 2800 ft. What are you using for premix?? Fuel?? Have you checked your reeds? If your are getting stuff out the tailpipe is it black or is it real runny? I blew a head gasket and it had quite a bit of brown runny stuff coming out the tailpipe. Head gaskets are cheap. Do a test like Motorrad said.
You had nothing better to do this week anyway right :wink:
--- End quote ---
Always do the "BIG 4"..
these tests point you to the problem every time... no guessing, wasting parts, or time etc... dont even need to buy gaskets to do them.... and if anything can save you alot of money from melting down a good motor.
Step back, take some time, and do some tests... if anyting, you may discover other problems that are hurting power besides the major one at hand...
The big 4
Compression check
Fuel Level check (external)
Ignition System check (Ohm the coil, and stator) only takes about 15min
Leakdown test
Also a VIDEO works great... we can tell alot by how it sounds..
and if you could pull the pipe, and snap some pictures of the kips drums... that would be helpfull...
Polar-Bus:
--- Quote from: kelcrist on April 18, 2011, 12:52:31 AM ---i didnt do compression cuz as i said the rings are new and the cylinder is new. it will try and break your foot off if you dont have boots on when you start it. i do believe it is still in the kips valve. i was just wanting some fresh ideas before i buy another top end gasket kit.
--- End quote ---
I understand what you said. The reason I suggested a compression test is because you are assuming because your top end is "new" it's good. We have read many posts here over the years about a member that has a "brand new top end" only to find out after a compression test that the compression is poor. Like Motorrad commented, a compression is a very simple, quick and definitive test. Granted you've done it right by seeking the services of a well known and competent company such as Millenium Tech so most likely your compression is fine. HOWEVER taking a compression test, and writing the number down for future reference after a fresh engine is broken in is a smart move in the sense that now you have a baseline compression PSI, so that in the upcoming years you have a comparative number if you have future running issues.
kelcrist:
ill do the compression tonight.....ill have to make the stuff for leakdown. i do not suspect any probs in that area but i have not made any sort of ignition tests at all so my ignition could be weak. also have not looked at float......both good suggestions that i will do first.
i agree the 155 seems lean. however my best friend bought a 97 recently and it had a 158 in it. i have put in what you would assume the bike SHOULD have but it doesnt seem to be what it wants to run right.
this bike will run with any of the other 4 500s that i ride with......it just sounds different and delivers power different. no lack of power at all however. the stuff coming out the pipe is oil......nice and black.
also since i probably wasnt clear about this in the first post......... i didnt put this bike together recently.......i did the top end originally about a year ago........ thats when it had the tractor bottom end power but no top end. i rode it this way for about 7 months. thats when i retimed the kips. now it revs and still has good low end but not tractor like.
ill do some checks tonight and let you know what i find.
snoopjonnyjon:
--- Quote from: kelcrist on April 18, 2011, 04:27:09 PM --- however.........it has been blowing a lot more oil out of the exhaust lately
--- End quote ---
I wonder if the right side crank seal could be causing your troubles.
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