[alpinestar kx]

i have a kx 125 2004 i have just put a new piston and ring in my bnike it was running fine a coup[le of days ago now it wont run it will start and run for a few seconds then cuts out take the plug out and its covered in fuel... any ideas on the problem?

alpinestar kx

 

[FPMXer]

Dirty air filter???

 

[griffbones]

Did it run for a while after the rebuild, or are you saying that it hasn't run right since the rebuild?
As mentioned, dirty air filter
float level
needle seat
cracked or chipped reeds
there are several possibilities

 

[alpinestar kx]

thanks for the replies guys i have looked at it today and all it was was a faulty spark plug it was giving a good spark but was failing under compression....