powervalve

[125jens]

is cleanin the powervalve importarnt? and how do you do it. does the jug have to be taken off then the powervalve totally dissasembled? or can the cover just be taken off and sprayed down with some cleaner to get the oil build up outta there? any helps is greatly aprreciatedd.

[MX86]

it is VERY important.

what year is the bike?

you need to take the PV out and spray it down with a contact cleaner and get all the carbon off..

[125jens]

its an 02. to take the valve out does the cylinger have to be taken off or can you take it out just by taking the cover off?

[MX86]

you can do it w/o removing the cylinder, but it's easier just to remove the engine

[125jens]

alright well i popped the powervalve cover on my 02 cr125 and on my friends 03 cr 125. my bike runs great and has a strong powerband but his bike sputters and has a hard time getting into the powerband. right away i saw a big difference when we pulled the covers. my bikes powervalve had oil all over and a bit of carbon build up but his bike was totally clean not a speck of oil or carbon. i could turn my valve by hand without any trouble but his was even hard to turn with vice grips. i know its bad that his is stuck but is it bad that mine was oily and had some carbon where as his was totally clean. also how could any of this be fixed ?

[125jens]

can anyone help me out?

[MX86]

hrm.. maybe your linkage is bad... it should be difficult to turn or lift when connected

[125jens]

mine is kinda difficult to but his is totally stuck in position

[MX86]

sounds like the connecting arm or cables...