Bog On The Mid End

[hrc125rider]

i have a 1993 cr125r and its driving me CRAZY!i have done everything from chaniging the jetts to adjusting the clip on the needle and i still have a bog on the mid-end! i would appretaite it if anyone can give me some suggestions on how to fix it. THANKS

 

[Matt_H]

checked the top end latly?

 

[cr25096er]

it has a new top n bottom end.

 

[hrc125rider]

yes i replaced the top and bottom end a month and a half ago with all hi performance parts such as a wiseco pro lite piston and hot rod crank and all of the bearings and seal

 

[hrc125rider]

does any one think that the bog can be caused by a toasted crank seal? becuase that would also explain why i have to change my oil so much?

 

[hrc125rider]

right side crank seal that is.i just replaced the left.Also if the right side crank seal was toasted would it richen up or lean up the mixture?