knocking

Hi all, Currently rebuilding an '81 basket case and have noticed that there's play in the crankshaft. As you can see from the below video, there's movement "forwards" and "backwards" and a pretty good clunk! Up, down and left, right looks good. Is this something I need to worry about? If so...

1982 xs400s Heritage Alright so I made a thread about this a couple weeks ago and asked for some suggestions on what the noise could be. I finally got the top end fully taken apart as I have been busy since then. This is the video of the noise for reference. So while the pistons have been off...

Been troubleshooting an oil leak and finally just installed the battery again. Pulled the choke fully out as its about 30 degrees out and I don't remember the noise being there. It was idling at I think 2-3k, I don't know for sure and then at some point I heard it drop in RPM to around 1.5k...

Hey there. New to the XS world. Wondering if anybody could point me in the right direction. Im Wondering if xs400 engines are naturally loud mechanically. Mine is making some cam chain noise it would appear, aswell as a touch of bottom end knocking when cold. It would be great of everyone could...