:( anyone ever run into weak spark on a 1987 yz 250. I checked the stator ohms and tried a different coil also cleaned all connectios,but still have weak spark dealer said no way to test cdi black box any help would be appreciated
well IF i were you i would replace the stator coils, i have seen so many of those go bad on all sorts of bikes. usually only like $80 from electrex usa, plus then they will be fresh.