running hotter on right cylinders than left

[BryanFries83]

I have a 79 xs 1100, recently I've noticed it's running hotter on right cylinders. Used a temp gun and found that after a ten mile ride it gets up into the mid 200's where left side was only up to low 200's. Anyone have any idea's on why it would do that?

[IanDMacDonald]

Pull your plugs and see how they look. Obviously as you know, the hotter pipes are running leaner than the cooler pipes.

[Sobitthen]

Make sure both sides of the bike's pipes are in the same condition, ie not aiming at a tarnished one or a rusty one then comparing to clean chrome as I notice a difference as well if I do that.

[MPittma100]

Temperature

I have a 79 xs 1100, recently I've noticed it's running hotter on right cylinders. Used a temp gun and found that after a ten mile ride it gets up into the mid 200's where left side was only up to low 200's. Anyone have any idea's on why it would do that?

You mention "cylinders". Not sure what you mean by that but you should measure each exhaust header pipe temperature with the gun. 200 degrees is not a hot enough exhaust temperature even at idle. If each cylinder is firing correctly, you would not be able to touch any of the pipes. If you are pointing the gun at the cylinder head, you will not obtain accurate information there.

As also mentioned, look at the spark plugs and see if there are any differences between them - color wise or if one or more is wet.

Are you having a particular running issue?

Mike