poor running

[fstkx500]

so i just traded my running mint cond. 1986 kx125 for a not running K5. the motor came in a box so i put it all back together had the cylinder replated,ported, new hotrods crank and rod, boysen rad valve, pc pipe with fmf silincer and  the list goes on. its a brand new 1987 K5. well my problem is she somkes reallly bad has nooooo power wont even lift the front wheel. jetting is on from what i can tell no pinnging spark plug looks good im running 40:1 with high test gas and elf 2 storke oil. motor has no power band i cant figure this one out ive had bikes my whole life but ths pig has me stumped. help me please ive had her for 3weeks and put alot money to make her run agian and look good. any ideas dont want sell her

[KX500freak]

forgive me if im wrong ,but did  k5 had kips from 87 ??

so if so check that system ?

just thinkin out loud

[fstkx500]

yes it does. thats kinda what was thinking. when i got her she was already taken apart and the dude before me didnt mark anything so i put them back in how i thought was right. does anyone now how they go back in on a 1987 K5?

[KX500freak]

well i know this if the engine is running you could check up on them ,
from 88 up its possible to remove a little plastic cover at the right side.
then kick it and rev it while watching to the kips rod pulling out/in ..
if its working and correct it should blast ,
if not there,s your issue..

dunno much about adjustments or whatever but my both engines are revin the hell out so it very noticeable when kips is online

[fstkx500]

thanks but they move when u rev her up already checked that what im wonderin is there any timming marks on these things. and she smokes like a mother!!!!!

[KX500freak]

thanks but they move when u rev her up already checked that what im wonderin is there any timming marks on these things. and she smokes like a mother!!!!!

oef breakin my head for you ...i say wait for some real experts on this matter 

[fstkx500]

thanks i really need the help on this one

[Hillclimb#42]

Possibly seals worn or damaged if they were replaced. Also, on my k5 I had to lean out needle, one step leaner than stock. Check Pro circuit site for recommendations. Sounds like you may be sucking in crank case oil or are way fat. What about carb? You have it off and go thru it yet? clogged main or crap in there playing games? Fresh fuel?

[fstkx500]

carb is good all new jets slide is good and my gas is 107 octane mixed 40:1 with elf semi syntheic

[KX500freak]

comes in mind ,does she have a good compression though?
measured that ?

[fstkx500]

yeah the motor has about 45 min on her puttzin around in my back yard and my yards bigggg shes a real pain to start hurts ur foot really bad we had to tow it behind my lil bros 07 suzuki z400 but now i got it down after reading all the tips

[TheGDog]

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dunno much about adjustments or whatever but my both engines are revin the hell out so it very noticeable when kips is online
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Wow... your bike looks so clean!  Good Job!

[hughes]

so i just traded my running mint cond. 1986 kx125 for a not running K5. the motor came in a box so i put it all back together had the cylinder replated,ported, new hotrods crank and rod, boysen rad valve, pc pipe with fmf silincer and  the list goes on. its a brand new 1987 K5. well my problem is she somkes reallly bad has nooooo power wont even lift the front wheel. jetting is on from what i can tell no pinnging spark plug looks good im running 40:1 with high test gas and elf 2 storke oil. motor has no power band i cant figure this one out ive had bikes my whole life but ths pig has me stumped. help me please ive had her for 3weeks and put alot money to make her run agian and look good. any ideas dont want sell her

You stated the "Jetting is on from what I can tell, no pinning, spark plug look good" From the way the bike is running I can't see how you can tell is the jetting is correct. May need better information about the problem. Float level would be high on my list of things to check. Just a quick tip: These 500's take a while to come up to temp and to clear their throat. My bike needed at least 5mintues or more of slower riding to get the engine up to temp and then it started making power.

[KX500freak]

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Wow... your bike looks so clean!  Good Job!

thanks Gdog that  was a year ago now ,still looks good lucky me

[fluffy]

i just started my 89 after sitting for 3 or 4 weeks,stared pretty good putted around the back yard good but every time i nailed it a lot of blubbering. even after all warmed up no better. put it on the lift,took the carb off,held it up level to take 4 screws off bowl and as soon as the last screw was loosened gas came out. float was sticking bowl was full.good luck.