Maintenance & Technical > KX250 / KX125

The Troublesome KX125 i own.. Has a cracked transfer port :|

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TaKeN:
After speaking to the man who has done work on my bikes engine ( Well before i bought it )


He told me to remove the cylinder head off the KX 125 and inspect the cylinder, the transfer port on the left has a nice crack in it.


Is this the reason why my bike seems to have very little power and constantly missfires ?


Pics to come shortly ! ( NOW AT THE BOTTOM OF THE PAGE )


Oh and should my powervalve look like THIS >>  http://images1.filecloud.com/346620/KX%20125%20Engine%20Problem%20005.jpg    in the exhaust port ? :o

You can see those two silver flaps


http://images1.filecloud.com/346631/KX%20125%20Engine%20Problem%20-%202%20010%20-%20Explain.JPG - Pic 1


http://images1.filecloud.com/346632/KX%20125%20Engine%20Problem%20-%202%20012%20-%20Explain.JPG - Pic 2


As you can see in picture two the port has a crack in the bottom of it.

Wizzy214:
it could just be me but your pics are hella blurry....

have you done a pressure test???

and yes your power valve could be clogged....

if its cracked take it to a machince shop and have them weld it up!!!!!!

TaKeN:
The pics are very blurry yes, i don't know why because the camera doesn't usualy do that.


I havn't tried a pressure test because i don't have the kit.


The bike is being booked into a local bike mechanic next weekend so he can fiddle with it, i don't realy think im up to the job.

TaKeN:
http://images1.filecloud.com/347265/KX%20125%20Engine%20Problem%20-%203%20008%20-%20Forum.JPG


Thats a better picture showing the cracks.

gowen:
I'm thinking you need to have that cylinder welded and then replated. From the looks of the plating, it is just about out of life.

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