Mjk
XS400 Member
I have been running the bike for a week now, '78 XS400. Just put 30 miles on today and wanted to see what you all think of what these plugs might be indicating. I can't tell for the life of me whether they're running lean or ideal or what, it's just something I haven't picked up yet, and the differences in online pictures hardly help me at all. That being said, any help would be greatly appreciated!