lean

So I got everything running good but I just want to know what you think is a high engine temp and if the spark plugs look lean. After riding the bike for 20min and giving it some juice, the spark plug sensor is reading about 310 when its 88F degrees. Using a laser temp I was getting about 290...

Hey friends! This is my first actual post on here, but I've been around I here for a couple years now getting my 79 xs400 up and running. Recently i did a bunch of mostly cosmetic work on the bike which involved taking off the exhaust. The guy i bought it from did a custom 2-1 exhaust. It...

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...

I've been reading this forum for about a month now. I've tried just about everything on this site so far but my bike still won't work. I have a 1979 xs400e (I think). All original everything. It was given to me after sitting for almost a year in the sun. I had ridden it and it ran great...

So I just got my bike up and running after giving the carbs a nice clean. However, there is obviously some adjustments that need to be made. Whenever I hit the gas the revs drop a little then go way up and stay up for a while. The throttle is EXTREMELY laggy (in other words). What's the deal...