I was wondering what was the stock jet size. The one i pulled out of my 04 z400 was a 22.5 that sounds small. My z doesn't run right and was wondering what size needs to be in it.

 

what jet are you trying to change. That definatly aint the main jet which most have to change.....that sounds like pilot or something...been so long I forgot what they are all


pretty sure stock size is 130 MIKUNI!!! dynojet sizes are differnet then Mikuni

 

130 main with a 22.5 pilot.